10. If a plane travels north for 2.5 hours at a velocity of 150 km/hr what distance did it travel?

The graph shows how a star's orbital speed changes over time as a result of the gravitational drag of an orbiting planet.

These results show that the planet's orbital period roughly corresponds to the spectral line wavelengths of the star.

By examining the spectral lines, astronomers are able to identify the element as well as its temperature and density in the star. Another thing the spectral line may help us understand is the star's magnetic field. The width of the line allows us to calculate how quickly the material is moving. We could learn more about the winds in the stars from this.

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(a) There is only one degree of freedom in this problem since the collar can move along the shaft but cannot rotate. The constraints are that the distance between the collar and the pivot point is always equal to l, and the collar cannot move perpendicular to the shaft.

(b) The forces acting on the collar are the spring force and the gravitational force. Since the collar is sliding along a frictionless shaft, there is no frictional force. The equation of motion for the collar is given by:

m(d²x/dt²) = -k(x-l) - mg

where x is the displacement of the collar from its equilibrium position.

(c) The normal force between the collar and the shaft is perpendicular to the shaft and balances the component of the gravitational force that is perpendicular to the shaft. As the collar moves away from its equilibrium position, the spring force becomes unbalanced and the normal force changes accordingly. The normal force is given by:

N = mgcos(θ) + k(x-l)sin(θ)

where theta is the angle between the shaft and the vertical axis.

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The linear acceleration of the car wheel is 0.735 m/s².

The linear acceleration of a point on the rim of a wheel is related to the angular acceleration of the wheel by the equation:

a = rα

Where "a" is the linear acceleration, "r" is the radius of the wheel, and "α" is the angular acceleration.

Given the data in the question;

Plug the given values into the above formula and solve for the linear acceleration of wheel.

a = r × α

a = 0.3 m × 2.45

a = 0.735 m/s²

Therefore, the linear acceleration is 0.735 m/s².

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1. W = 50J

2. W = 6.9J

3. Work done is same as force  = 30N

4. P = 480W

1. Here given:

F = 25N

D = 2m

We have to find  W = ?

Work done Formula : W= F x D

By substituting ,

W = 25 x 2

W = 50J

2. Here given,

F = 15N

Angle = 30°

distance = 3m

W = 15* 3 * cos 30

= 6.9 J

3. Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. When we apply a force of 30N to a wall, it responds with the same force.

4. The work done will be calculated using the formula:

W = mass*gravitational acceleration*height.

Furthermore,

power = work done / time.

500 + 100 = total weight

600 N = total weight

Maintain the values in the formula -

Work completed = 600*4

2400J

P = 2400/5

= 480W

Hence, the power is 480 Watt.

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The duck can always reach the shore without being eaten by the fox.
Assume that the duck is swimming in a circular path around the centre of the lake and that the fox is waiting at a fixed point on the shore. Since the fox is four times faster than the duck, it can run along the shore at a constant speed that is also four times the speed of the duck's swimming.

Now, imagine that the duck swims around the lake one full time, starting at the point farthest from the shore where the fox is waiting. The duck will take some amount of time to complete this circuit, during which the fox will also have travelled some distance around the lake.

However, since the duck is swimming in a circular path, it will eventually cross the point on the opposite side of the lake from where it started. At this point, the duck is closer to the shore than the fox is. Furthermore, since the duck can now fly, it can reach the shore before the fox catches up to it.

So, it will eventually reach a point where it is closer to the shore than the fox and can fly the rest of the way to safety. Therefore, the duck can always reach the shore without being eaten by the fox.

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Answer: 35 m/s

Explanation: Gravitational acceleration only affects the vertical component of motion meaning the horizontal component never changes. This means 35 m/s is the correct answer.

A projectile is fired horizontally at an initial horizontal speed of 35 meters per second from a height of 65 meters, after falling 25 meters, the projectile's horizontal speed is 35 m/s.

The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar number.

Speed is calculated using the formula s=d/t, where s is the speed in m.s⁻¹, d is the distance in m, and t is the time in s.

Variable speed is when an object travels a different distance at the same time intervals, whereas uniform speed is when an item travels the same distance at the same time intervals.

Therefore, after falling 25 meters, the projectile's horizontal speed is 35 m/s.

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The amount of force necessary to keep it submerged in water is F=0.258N.

The force required to hold a table tennis ball submerged in water is calculated using the formula:

\(F =\frac{ (\rho * V * g) }{ A}\)

Where F is the force, ρ is the water's density, V is the ball's volume, g is its gravitational acceleration, and A is its cross-sectional area.

The following formula is used to determine the ball's volume:

\(V = \frac{4}{3}*pi*r^3\)

where r is the ball's radius.

The radius of the ball is half its diameter, thus:

\(r = 3.8 cm^2\)

Therefore,

\(V = \frac{4}{3}*pi *(3.8 cm ^2)3\\V = 0.5222 cm3\)

The cross-sectional area of the ball is calculated using the formula:

\(A = \pi * r^2\\\\A = \pi* (\frac{3.8 cm }{ 2})^2\\A = 4.5257 cm^2\)

Substituting the values in the above formula,

\(F =\frac{ (0.084 g/cm^3 * 0.5222 cm^3 * 9.8 m/s^2) }{4.5257 cm^2}\\F = 0.258 N\)

Hence, the force needed to keep it submerged in water is 0.258N

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An electrical impulse travel through a nerve cell by dendrites to the cell body.

The fundamental functional unit of the nervous system, the neuron, is in charge of receiving, carrying, and transmitting nerve impulses.

The dendrites of the neurons receive the electrical impulses.

These electrical impulses are sent from the dendrites to the cell body where they originate.

The axon carries the impulses from the cell body to the axonal end after receiving them.

The adult human brain is estimated to have 86 billion nerve cells, also known as neurons, which are the basic functioning components of the nervous system. A nerve cell's function is to receive information from other cells and convey it to other cells. In the human body, there are three basic types of nerve cells that work together to sense and analyze information about our surroundings before evoking reactions to these stimuli.

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Let's call the length of the race track as "x".

To solve for "x", we can use the formula:

\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

Since the race ends in a tie, we know that Jan and Mary both took the same amount of time to run the race. Let's call this time "t".

\(\implies \text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

\(\implies t = \dfrac{x - 25}{7.5}\)

\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)

\(\implies t = \dfrac{x}{8.0}\)

Since both expressions represent the same time, we can set them equal to each other and solve for "x":

\(\implies \dfrac{x - 25}{7.5} = \dfrac{x}{8.0}\)

Multiplying both sides by 60 (the least common multiple of 7.5 and 8.0) to get rid of the decimals:

\(\implies 8(x - 25) = 7.5x\)

\(\implies 8x - 200 = 7.5x\)

\(\implies 0.5x = 200\)

\(\implies x = 400\)

\(\therefore\) The length of the race track is 400 meters.

\(\blue{\overline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad}}\)

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\\)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 1000 \times {26}^{2} \\ = 500 \times 676 \\ = 338000\)

We have the final answer as

Hope this helps you

Answer:

Without it, we could not survive on Earth. Earth orbits the sun due to the gravity of the sun, which maintains us at a convenient distance from it to enjoy the sun's warmth and light. It keeps the air we need to breathe and our atmosphere in place. Our planet is held together by gravity.

Answer:

Horsehair, cotton, or linen

Explanation:

Governor spring hold the throttle plate in the "closed" position when the engine is not running.

When the engine is not running, the governor spring holds the throttle plate in the "closed" position. This means that the throttle plate is covering the opening to the intake manifold, preventing air from entering the engine.

The throttle plate is a valve located inside the carburetor that controls the amount of air and fuel mixture that enters the engine. When the engine is not running, the governor spring keeps the throttle plate in a closed position to prevent any air and fuel mixture from entering the engine. This is important for safety reasons, as it helps prevent any accidental starts or engine runaways when starting the engine.

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Answer:

water has a low heat capacity

Explanation:

The base of table is "1.08856 m" far away from the ball land.

Given:

Distance travelled by ball,

Initial velocity,

Acceleration,

Constant speed,

As we know the formula,

→ \(S = ut+\frac{1}{2}at^2\)

By substituting the values, we get

→ \(1.2=\frac{1}{2}\times 9.8t^2\)

→ \(1.2 = 4.9 t^2\)

→    \(t = \sqrt{\frac{1.2}{4.9} }\)

→      \(= 0.4948 \ seconds\)

Let,

→ \(x = 2.2\times t\)

     \(= 2.2\times 0.4948\)

     \(= 1.08856 \ m\)

Thus the solution above is right.

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The initial velocity is Vo = -24 ft/sec.

Solution:

s(t) = -16t² + Vot + 112 +112

5(2) = 0

16(2)² + Vo(2) +112=0

Vo = -24 ft/sec

We know that when an object falls its initial velocity is zero. When an object leaves contact with something that is holding or throwing it, it is in free fall. Under these conditions, the motion is one-dimensional and has a constant acceleration of magnitude.

Initial velocity describes how fast an object is when gravity first exerts a force on it. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration. This equation defines the maximum projectile height from the launch position and depends only on the vertical component of the initial velocity.

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Answer:

Vector Quantities Increase/Decrease in Temperature - The measurement of the medium's temperature is a scalar quantity; the measurement of the increase or decrease in the medium's temperature is a vector quantity. Velocity - The measurement of the rate at which an object changes position is a vector quantity.

Answered by TurttlePrincess

would be appreciated, I'm trying to reach genius!  

If you have questions, leave a comment, I'm happy to help!

Answer:

Explanation:

First I need to tell you that I used .20 s for the period of rotation instead of just .2, and I used 30.0 kg for the mass instead of just 30. The reason being that both those numbers as stated in the problem only have 1 significant digit and that's not generally enough to get the accuracy you're looking for. Adding a 0 to the ends of each of those numbers doesn't change the value of the numbers, only the number of sig fig's in each. Beginning with a:

a. \(f=\frac{1}{T}\) so \(f=\frac{1}{.2}\) and f = 5.0 Hz

b. The circumference is the distance around the outside of the washer's drum. We need to find that, but before we do, I'm going to state the radius in meters instead of cm. 35 cm = .35 m. Therefore,

C = 2(3.1415)(.35) so

C = d = 2.2 m

c. The speed of the washer is found in d = rt, where r is the rate and our velocity and d is the distance around the outside of the drum (circumference). Therefore,

2.2 = v(.20) so

v = 11 m/s

d. The centripetal acceleration has an equation

\(a_c=\frac{v^2}{r}\) so

\(a_c=\frac{(11)^2}{.35}\) and

\(a_c=\frac{121}{.35}\) so

\(a_c=350\frac{m}{s^2}\)

e. The centripetal force has an equation

\(F_c=\frac{mv^2}{r}\) and

\(F_c=\frac{(30.0)(11)^2}{.35}\) and

\(F_c=\) 1.0 × 10⁴ N

f. The equation for Power is

\(P=\frac{W}{t}\) where W is work and W = FΔx (force times displacement). Therefore,

\(P=\frac{(1.0*10^4)(2.2)}{.20}\) so

P = 1.1 × 10⁵ Watts

Answer: C. Inherited traits carry the instructions for individual genes.

Explanation: bejewels I know stuff. ☆ - ~ hope this helps

Answer:  B    

The evidence helps scientists come up with explanations about

the natural world.

When making a research, scientists use the scientific method to collect enough evidence in an experiment related to a hypothesis, the results aiming to support or contradict a theory.

Answer:

Gravity

Explanation:

Answer:

The Moon creates tides

As Earth spins on its own axis, gravity and centrifugal force keeps ocean waters at equal levels.

The option that does not shows the property of a metal is option (c) cannot be forged

Metals are generally known for their ability to be forged or shaped under high pressure or temperature, which is one of the reasons they have been used for centuries to make tools, weapons, and other objects.

On the other hand, high thermal conductivity and malleability are two common properties of metals. Thermal conductivity refers to the ability of metals to transfer heat quickly, which makes them useful in applications such as cooking and heating. Malleability refers to the ability of metals to be shaped into various forms without breaking or cracking, which makes them useful in applications such as construction and manufacturing.

Therefore, the correct option is (c) cannot be forged

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The amount of gravitational force that acts on a space vehicle while in earth orbit is almost zero but not absolute zero.

There is no ground force or opposing natural force to gravity.

Because the earth is not a perfect sphere, the value of "g" is lowest at the equator. At the equator, its radius is at its largest. Thus, the equator is the location where g will be smallest according to the equation

g = GM/R2.

All items in the planet's gravitational field will be lost in space if gravity abruptly vanishes. We would experience levity. Essentially, if gravity is equal to zero, then there will be no acceleration caused by gravity.

Astronauts can float within their spaceship or outside during a spacewalk in microgravity. Moving heavy stuff is simple. Astronauts, for instance, can merely use their fingertips to manipulate machinery weighing hundreds of pounds.

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The car will accelerate from rest at a constant rate of \(5 m/s^2\) for about 4.4 seconds until it reaches a speed of 79.2 km/h (49.2 mph or 22.0 m/s).

Using the following equation of motion, we can estimate how long it would take for your car to accelerate from rest to a speed of 79.2 km/h (49.2 mph or 22.0 m/s):

v = u + at

Where:

v = final velocity

u = initial velocity

a = acceleration

t = time

Since the car is at rest, the initial velocity in this scenario is 0 m/s, the acceleration is \(5 m/s^2\), and the final velocity is 22.0 m/s.

Plugging the values into the equation, we have:

22.0 = 0 + 5t

5t = 22.0

t = 22.0 / 5

t ≈ 4.4 seconds

As a result, your car will accelerate from rest at a constant rate of \(5 m/s^2\) for about 4.4 seconds until it reaches a speed of 79.2 km/h (49.2 mph or 22.0 m/s).

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If the measure of angle 2 is 8 x 10 and the measure of angle 6 is x&2-38. The measure of angle 8 is also 160 degrees.

Angle 2 is given as 8 x 10, which means it has a measure of 80 degrees (assuming "x" is equal to 10). Angle 6 is given as x&2-38, which means its measure depends on the value of x. To find the measure of angle 8, we need to understand the relationships between these angles.
Based on the diagram, angle 2 and angle 6 are vertical angles. Vertical angles are congruent, meaning they have the same measure. Therefore, if angle 2 measures 80 degrees, then angle 6 also measures 80 degrees.
Angle 8 is adjacent to angle 6 and angle 2. Adjacent angles share a common side. Since angle 2 measures 80 degrees and angle 6 measures 80 degrees, the sum of angle 2 and angle 6 is 80 + 80 = 160 degrees.
Angle 8 is formed by the sum of angle 2 and angle 6. Therefore, t

In summary:
- Angle 2 measures 80 degrees.
- Angle 6 measures 80 degrees.
- The sum of angle 2 and angle 6 is 160 degrees.
- Therefore, angle 8 also measures 160 degrees.

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Answer:

C. Electromagnetic wave

Explanation:

Please give me brainliest

Answer:

C. electromagnetic

Explanation:

because 5g uses higher frequency radio waves a type of electromagnetic radiation which are within the spectrum considered safe.

A mechanical wave is created when a source of energy causes a vibration. Vibration causes disturbance in system.

A mechanical wave is a wave that is caused by the oscillation of matter and so conveys energy through a medium.

When an energy source causes a vibration to propagate across a medium, it is called a mechanical wave.

A mechanical wave is a type of wave in which the medium's vibration is perpendicular to the wave's travel direction.

Hence, vibration is the correct answer.

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The force of attraction that a -40. 0 μc point charge exerts on a 108 μc point charge has magnitude 4 N. then these two charges are apart by the distance 3.11 m.

According to the law, the strength of the electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of the distance between them and directly proportional to the product of the magnitudes of the charges. Coulomb investigated the repellent force between things with identical electrical charges:

Given,

q₁ = 40 × 10⁻⁶ C

q₂ = 108 × 10⁻⁶ C

F = 4 N

1/4πε0 =  8. 99 × 10⁹

Coulomb's law is given by,

F = q₁q₂ ÷ 4π∈r²

4 N = - 40 × 10⁻⁶ C × 108 × 10⁻⁶ C × 8. 99 × 10⁹ ÷ r²

4 N = 38.83÷ r²

r² = 38.83÷ 4

r² = 9.7

r = 3.11 m

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Answer:

120V

Explanation:

Given parameters:

Current  = 6A

Resistance  = 20Ω

Unknown:

Voltage = ?

Solution:

According to ohms law;

           V = IR

Where V is the voltage

            I is the current

            R is the resistance

Now, insert the parameters and solve;

    V  = 6 x 20  = 120V