What's true about the elliptical path that the planets follow around the sun?

The final kinetic energy of the rifle is about 3.48 times greater when firing the heavier bullet.

We can use the conservation of momentum to find the velocity of the rifle after the bullet is fired. Since the rifle is initially at rest, the total momentum before the bullet is fired is zero. After the bullet is fired, the total momentum is:

\(p = mvbullet + MVrifle\)

where m is the mass of the bullet, vbullet is its velocity, M is the mass of the rifle, and Vrifle is the velocity of the rifle after the bullet is fired. Since there are no horizontal external forces acting on the rifle-bullet system, the total momentum is conserved, so we have:

0 = mvbullet + MVrifle

Solving for Vrifle, we get:

\(Vrifle = -mvbullet/M\)

Note that the negative sign indicates that the rifle moves in the opposite direction of the bullet.

The kinetic energy of an object is given by:

\(K = (1/2)mv^2\)

where m is the mass of the object and v is its velocity. The ratio of the final kinetic energies of the bullet and rifle is:

\(Kbullet/Krifle = (1/2)mvbullet^2 / (1/2)MVrifle^2\)

Substituting the expression for Vrifle that we found above, we get:

\(Kbullet/Krifle = (m/M)(vbullet/Vrifle)^2\)

For the first bullet, we have m = 5.00 g = 0.005 kg and vbullet = 300 m/s. Substituting these values, we get:

Kbullet/Krifle = (0.005 kg / 3.00 kg) (300 m/s / (-0.005 kg / 3.00 kg))^2

Simplifying, we get:

Kbullet/Krifle = 0.0025

For the second bullet, we have m = 10.5 g = 0.0105 kg and vbullet = 300 m/s. Substituting these values, we get:

Kbullet/Krifle = (0.0105 kg / 3.00 kg) (300 m/s / (-0.0105 kg / 3.00 kg))^2

Simplifying, we get:

Kbullet/Krifle = 0.0087

Therefore, the ratio of the final kinetic energies of the bullet and rifle for the two cases is:

0.0087 / 0.0025 = 3.48

So the final kinetic energy of the rifle is about 3.48 times greater when firing the heavier bullet.

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Answer:

C. Reflects only

Answer:

Active stretching.

Explanation:

Think about it.

Answer: Distance:400m Distance:0m

Explanation: Distance: 1(lap)x400 which will obviously be 400m

Displacement: from where you started to where’s you ended so if you ran a full lap around a track and came back to where you started you wouldn’t have ran any Miles’s in displacement.

It might help you more to draw a diagram, but I hope I helped!

Answer: Yes. you can search this question on the website quora

Explanation:

Answer:

Because the length is 10 cm, we know that there are two side lengths in a rectangle, so let's add another 10 and hold onto 20 cm.

Now, we need to find what is 74 - 20 to find the other two side lengths that are possible to make the perimeter 74 cm.

44 cm divided by 2 is 22, so the perimeter needs to be greater than 22 centimeters to make the perimeter greater than 74.

The angular acceleration of the potter's wheel = 0.023 rad/s²

At rest, the angular speed, w₀ = 0 rad/s

Final angular speed, w = 0.10 rev/s

Convert 0.10 rev/s to rad/s

Time, t = 27.7 s

To find the angular acceleration, use the equation:

Substitute w = 0.6284 rad/s, w₀ = 0 rad/s, and t = 27.7 s into the equation above

The angular acceleration of the potter's wheel = 0.023 rad/s²

The equivalent resistance is 6R/11, the current flowing through the circuit is 55/6R, and the voltage across resistor R2 is 55/3 V when the three parallel resistors R1, R2, and R3 are joined in parallel across a 5V battery.

The unit of resistance is ohm (Ω), named after the German physicist Georg Simon Ohm. One ohm is defined as the amount of resistance that will allow one ampere of current to flow with one volt of applied potential difference.

To find the equivalent resistance (R_eq) of the three parallel resistors R1, R2, and R3, we can use the formula:

1/R_eq = 1/R1 + 1/R2 + 1/R3

Substituting R1 = R, R2 = 2R, and R3 = 3R, we get:

1/R_eq = 1/R + 1/2R + 1/3R

1/R_eq = (6/6R + 3/6R + 2/6R) / (1/6R)

1/R_eq = 11/6R

R_eq = 6R/11

To find the current (I) flowing through the circuit, we can use Ohm's Law, which states that:

I = V/R_eq

Substituting V = 5V and R_eq = 6R/11, we get:

I = 5 / (6R/11)

I = 55/6R

To find the voltage (V_R2) across resistor R2, we can use the formula:

V_R2 = I * R2

Substituting I = 55/6R and R2 = 2R, we get:

V_R2 = (55/6R) * (2R)

V_R2 = 55/3 V

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Answer:

the car will slow down due to the change in speed

A car of mass 1500 kg travels at a speed of 15 m/s, and it collides with 500 kg moose which is knocked backward at 20 m/s then the speed of the car will reduce due to collision with the moose.

In physics, collision, which is also known as impact, is the abrupt, violent coming together in proximity of two bodies, such as two pool cues, a golf club and a ball, a hammer as well as a nail, two railroad cars when coupled, or a falling object and a floor. The force and the amount of time the objects are in touch with each other, in addition to the materials made up of the two particles, influence the results of the impact.

A hard steel ball will, according to common experience, bounce back to almost the same position from whence it was dropped, while a putty or lead ball would not.

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Properties of the Universe that are directly explained by inflation include why the Universe's temperature is almost exactly the same everywhere and why the Universe is flat. Inflation provides an explanation for the uniformity of the cosmic microwave background radiation, which is observed to have the same temperature in all directions, as well as the large-scale structure of the Universe being mostly homogeneous and isotropic.

During the early stages of the Universe, before inflation, there were regions that were causally disconnected from each other due to the finite speed of light. As a result, one would expect the temperature of the cosmic microwave background radiation to vary in different regions of the sky, reflecting the temperature fluctuations in the early Universe. However, observations show that the temperature is almost the same in all directions, with only small fluctuations. This uniformity is directly explained by inflation, which caused the Universe to expand rapidly and uniformly, smoothing out any temperature variations that existed before inflation.

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a. To find the distance between the lines on the grating, we can use the formula for the position of the fringes in a diffraction grating.

The formula is given by d sinθ = mλ, where d is the distance between the lines on the grating, θ is the angle between the incident light and the normal to the grating, m is the order of the fringe, and λ is the wavelength of the light.

In this case, we are given the wavelength (530 nm) and the distance between the first order fringe and the central fringe (1.40 m). By rearranging the formula, we can solve for d.

b. To determine the minimum accelerating voltage required to produce an X-ray with a wavelength of 0.450 nm, we can use the equation for the energy of a photon, E = hc/λ, where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the X-ray.

Since the energy of a photon is given by the equation E = qV, where q is the charge of the electron and V is the accelerating voltage, we can equate the two equations and solve for V. By substituting the values of Planck's constant, the speed of light, and the desired wavelength, we can calculate the minimum accelerating voltage required.

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The coefficient of kinetic friction between the cars and the road is 0.648.

Let's first calculate the initial momentum of the system before the collision. The momentum is given by p = mv, where m is the mass and v is the velocity. Initially, the 2360 kg car is traveling at 10.9 m/s and the 2610 kg car is at rest, so the initial momentum of the system is:

p = (2360 kg)(10.9 m/s) + 0 = 25724 kg m/s

After the collision, the two cars stick together and move a distance of 4.39 m before friction causes them to stop. We can use the conservation of momentum to find their final velocity. Since the two cars stick together, their final velocity is the same:

25724 kg m/s = (2360 kg + 2610 kg) v

v = 6.08 m/s

The change in velocity is 10.9 m/s - 6.08 m/s = 4.82 m/s. The cars move 4.39 m before stopping, so we can use the equation of motion to find their acceleration:

v² = u²+ 2as

where u is the initial velocity, v is the final velocity, a is the acceleration, and s is the distance traveled.

Plugging in the values, we get:

0 = 4.82² + 2a(4.39)

a = -7.90

This is the acceleration due to the friction between the cars and the road. We can use this to find the force of friction:

F = ma = (2360 kg + 2610 kg)(-7.90) = -44780 N

The negative sign indicates that the force of friction is in the opposite direction of the motion.

The force of friction is also related to the normal force and the coefficient of kinetic friction by the equation F = μkN, where μk is the coefficient of kinetic friction and N is the normal force. The normal force is the force exerted by the road on the cars to support their weight. Since the cars are on a level surface, the normal force is equal to the weight of the cars:

N = (2360 kg + 2610 kg)(9.81) = 49090.8 N

Plugging in the values, we get:

-44780 N = μk(49090.8 N)

μk = -44780 N / 49090.8 N = 0.648

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Answer:

An ammeter.

Explanation:

The electric current in one part of a circuit is measured with an ammeter, which gives a reading in ampere.

Answer: 5.39g/L

Explanation:

We need to calculate the average molar mass of the mixture which will be:

= (10 × 32) + (50 × 40) + (40 × 244) / 100

= (320 + 2000 + 9760) / 100

= 12080 / 100

= 120.8g/mol

Since the volume occupied is 22.4L and 1 mole of the gas will occupies 22.4L given the standard temperature conditions, then the density of the mixture will be:

= Mass / volume

= 120.8 / 22.4

= 5.39g/L

Therefore, the density of the mixture will be 5.39g/L.

Two forces that make up electromagnetic forces related both the electric and magnetic forces are caused by the motion of charged particles such as electrons and is therefore denoted as option C.

This is referred to as the type of force which explains how both moving and stationary charged particles interact due to it occurs between electrically charged particles such as a

The electric and magnetic forces which are present are usually caused by the motion of charged particles such as electrons which is therefore the reason why option C was chosen as the correct choice.

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Answer: Light reflects from a smooth surface at the same angle as it hits the surface.

Explanation:  Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection

Answer:

sEE BELOW

Explanation:

Well.....because the numbers are 'astronomical'....meaning VERY, VERY , VERY LARGE

a) The free body diagram (FBD) for the mass would include the force of gravity (Fg) acting downward , the tension force (T) acting at an angle from the vertical, and the centripetal force (Fc) acting toward the center of the circle.

b) the tension on the rope is T = 215.5 N. c) The angle that the rope makes with the vertical is 61.4°. A conic pendulum is a type of pendulum that rotates in a horizontal circle while hanging from a fixed point.

The force that causes the mass to rotate is the tension in the rope. In this case, the mass of the pendulum is 12 kg, the length of the rope is 2.0 m, and the period of rotation is 2.1 s.


The tension on the rope can be found using the equation for centripetal force:

Fc = (m*v^2)/r

Where m is the mass, v is the velocity, and r is the radius of the circle. The velocity can be found using the equation v = 2πr/T, where T is the period of the rotation. Substituting the values given in the question:

v = (2π*2.0)/2.1 = 5.99 m/s

Fc = (12*5.99^2)/2.0 = 215.5 N

The tension force is equal to the centripetal force, so T = 215.5 N.

c) The angle that the rope makes with the vertical can be found using the equation tanθ = Fc/Fg, where Fg is the force of gravity. The force of gravity can be found using the equation Fg = mg, where g is the acceleration due to gravity (9.8 m/s^2):

Fg = (12*9.8) = 117.6 N

tanθ = 215.5/117.6 = 1.83

θ = tan^-1(1.83) = 61.4°

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The tennis ball takes approximately 0.582 seconds to reach its maximum height. The problem can be solved by putting the values of velocity, time and acceleration due to gravity in the formula of height.

To find the time it takes for the tennis ball to reach its maximum height, we can use the equation for vertical motion under constant acceleration, which is given by:

h = v0t - (1/2)gt^2

where h is the height, v0 is the initial velocity, t is the time, g is the acceleration due to gravity (9.8 m/s^2), and t is the time.

In this case, we know the initial height and velocity, so we can solve for the time it takes to reach the maximum height (when the velocity is equal to 0 m/s):

h = v0t - (1/2)gt^2

1.3 = 8.2t - (1/2)(9.8)(t^2)

Rearranging and solving for t, we get:

4.9t^2 - 8.2t + 1.3 = 0

t = 0.582 s

So it takes approximately 0.582 seconds for the tennis ball to reach its maximum height.

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Answer:

1.36×10^-21 N.

Explanation:

The magnitude of the force that the electric field exerts on the electron can be calculated using the formula:

F = qE

where F is the force, q is the charge of the electron, and E is the electric field strength.

Substituting the given values, we get:

F = (1.60×10^-19 C) × (0.00850 N/C)

F = 1.36×10^((-21) N

Therefore, the magnitude of the force that the electric field exerts on the electron is 1.36×10^-21 N.

Neptune's Diameter is 1632km.

Neptune's diameter when you observe it as it occults a background star when the relative velocity between Neptune and the Earth is 30 km/s and the star crosses through the middle of the planet and disappears for 27.6 minutes can be calculated as follows:

To solve this question, you can use the formula

d = 2vsT,

where d is the diameter of Neptune, v is the relative velocity of 30 km/s, and T is the time it takes for the star to disappear, which is 27.6 minutes.

Therefore, Neptune's diameter d = 2*30*27.6 = 1632 km.

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The linear speed of the clothes as a spin in the barrel is 102.1 m/s.

The linear speed of the clothes is the measure of the change of displacement of the clothes with time.

Mathematically, the formula for linear speed is given as;

v = ωr

where;

The angular speed of the wash machine is given as;

ω = 1950 rpm = 1950 rev/min x 2π rad/rev x 1 min/60 s = 204.2 rad/s

v = 204.2 rad/s x 0.5 m

v = 102.1 m/s

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Answer:

F, it's a BTU

Explanation:

When a charged body is placed near the conductor, the opposite charge is appeared on the one side of the uncharged conductor body near the charged body under the effect of induction.

The opposite charge on the another body is also known as the induced charge.

The perpex rod in the given question is charged.

let the charge on the perpex is positive as shown in the figure.

Then, the polystrene sphers (insulator uncharged sphere) will not have any charge induced as the charges are not free to move inside the insulator.

Thus, when a charged perspex rod is placed close to a suspended polystyrene sphere then the induced charge on the sphere is not observed under the phenomenon of induction process and sphere remain uncharged.

Answer:

inertia

Explanation:

a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

aka

it goes on because nothing is resisting it, in this case however, the car is there to stop it, and the result is spilled coffee (rip)

Answer:

C is correct

Explanation:

The statement that best describes how the phase of the Moon changes from a full moon to a new moon is as follows:

Thus, the correct option for this question is C.

The different phases of the moon may significantly include the new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter, and waning crescent. This cycle of phase change of the moon repeats once a month.

The Earth completes its one rotation around the sun in 365.25 days. While the moon completes its one rotation around the Earth in 29.5 days.  The rotation of the moon around the earth leads to phase change of it. This is because when the moon rotates around the sun, it directly or indirectly causes its exposure to the sun where its phase changes.

In the diagram above, when there is a full moon, the earth is present between the sun and the moon. But when a new moon arises, the moon is present between the earth and the sun.

Therefore, the correct option for this question is C.

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Answer:

Some stars in space can come to life causing humans to be amazed but at thesame time in great/critical danger.

Answer:

I’m glad you asked!

Explanation:

So let’s just say it is Fiction.Science fiction is perfect because it is with space and science,but it is fiction.

Science fiction!

Answer:

I think the answer is A,B,C

Explanation:

A wire located at the equator points vertically upward from the surface of the Earth. The wire carries a current straight up in a region where the magnetic field vector points due north. The direction of the resulting force on this current is West.

The magnetic field lines are closed curves leaving the North Pole and following the outside of the magnet to the South Pole. A compass, that's itself a small magnet, aligns parallel to the magnetic lines of pressure it is placed on. The magnetic field lines are the trails that the free North Pole tries to tour. The course of the magnetic field at a factor is determined by using setting a small compass needle at that point.

The north pole of the compass shows the direction of the magnetic area at that factor. outdoor the bar magnet, the magnetic discipline traces move from the north pole to the south pole, forming a closed loop so interior they move from the south pole to the north pole. The magnetic discipline lines seem to move from the south pole to the north pole within the magnet. Magnetic subject strains are directed from the South Pole to the North Pole growing a closed continuous curve.

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