A train at a constant 48.0 km/h moves east for 42.0 min, then in a direction 47.0° east of due north for 27.0 min, and then west for 52.0 min. What are the (a) magnitude and (b) angle (relative to east) of its average velocity during this trip?

The situation is: using two gliders, 4 collisions on a linear track are observed. In each collision, the initial speed of glider 2 is zero. Collisions 1 and 2 use an elastic band and a bumper attachment on the gliders to create an elastic collision where the two gliders touch for just a moment and the area of contact is minimal. Collisions 3 and 4 use a needle and wax receptacle so that during the collision, the needle bites into the wax and the two gliders stick together.

I have a position-time graph with about 100 lines of data (pre and post collision). I have access to the mass of each glider (with uncertainties). How would I find the answer to this type of question:

Based on the experimental data, 1. calculate the total momentum (in kg·m/s) of the system after the collision; 2. calculate the uncertainty of the total momentum (in kg·m/s) of the system after the collision.

What are the different ways that I can minimize error in oscillation of a rolling sphere in a bowl lab?

1.It takes light 8 minutes and 20 seconds to reach the Earth from the Sun. The speed of light in a vacuum is a constant at 3×108??. Assume Earth’s orbit is circular.a.Whatis the distance from the Sun to the Earth?b.Calculate the mass of the Sun

2.This past week SpaceX and NASA teamed up to launch two astronauts to theInternational Space Station (ISS)from Cape Canaveral for the first time since 2011.The ISShas a mass of4.08×105??and orbits the Earth on acircular path at an altitude of 400km (note that the radius of Earth is 6000 kmand mass of the Earth is 6×1024??).a.How fast is the ISS moving?b.How many orbits does the ISScomplete in one day?c.Determine the work required to put the ISS into this orbit assuming that it started from rest at the surface of the earth.

Two charged particles are located in the X-Y plane.

Particle 1 carries -0.200 uC of charge and is located at x= 3.55 m and y = 1.21 m.

Particle 2 carries 0.920 uC of charge and is located at x = -3.47 m and y = 1.65 m.

Find the Y component of the Electric Field at a point located at x = 2.87 and y = 3.96 m, in Newtons per Coulomb.

A spring is hanging motionless from the ceiling of a room on the earth. You attach a mass to the end of the spring and after releasing the mass, you observe that the spring extends a distance  before momentarily coming to a halt. What then must be the distance below just the spring's equilibrium position to the new equilibrium position of the spring-mass system?

A spring is hanging downward from the ceiling of a room on the earth, has nothing attached to the end, and is motionless. Is the spring in equilibrium?

For an object moving under simple harmonic motion while attached to a spring, when is the speed the greatest?

A block is attached to a spring and is hanging downward motionless from the ceiling of a room on the earth. Is the spring in equilibrium?

For an object moving under simple harmonic motion while attached to a spring, when is the net force the greatest?

For an object moving under simple harmonic motion while attached to a spring, when is the net force zero?

What is the term for the object's maximum possible displacement when moving under simple harmonic motion?

If at a certain point in time the displacement is positive for an object moving under simple harmonic motion, what is the sign of its acceleration?

For an object moving under simple harmonic motion while attached to a spring, when is the speed zero?

For an object in simple harmonic motion, what is the length of time required to return to its original position and to be traveling in the original direction?

Please answer all, thank you so much!

a) You wish to melt a 3.0-kg block of aluminum, which has already been heated to 660ºC. How much heat is required to melt the aluminum? (the textbook lists the latent heat of aluminum as 396,000 J/kg)

b) You wish to melt a 3.0-kg block of aluminum, which initially at 20ºC. How much heat is required to melt the aluminum? (the textbook lists the latent heat of aluminum as 396,000 J/kg)

A neutron combines with a carbon nucleas in an elastic collision. The carbon is at rest and the neutron travels at a speed of 2.6x10^6 m/s. The mass of carbon nucleus is 12 times the mass of neutron. Determine the velocities of the carbon nucleas and the neutron after collision.

1. Standby power (sometimes called vampire power) is the power used by a device that is off but plugged in and in a standby mode. Regulations typically limit this power to 1 Watt. If electricity costs $0.10 per kilowatt-hour, then to the nearest order of magnitude, and assuming 1 Watt, how much does it cost to leave a device in standby mode for one year?

(A) $0.01

(B) $0.10

(C) $1.00

(D) $10.00

(E) $100.00

Water makes life possible as a solvent for biological molecules. What electrical properties allow it to do this?

1. A collision in which two bodies remain joined together after the collision is referred to as.

2. A 0.5 kilogram cart moving at 0.360 m/s has how much momentum

3. If the 0.5kg cart moving at 0.36 m/s was to hit a barrier and bounce back with a velocity of - 0.240 m/s, what is its change in momentum

4.How fast must a 0.25 kg cart be traveling to have a momentum of 0.450 kgm/s?

5. A 0.230 kg baseball is thrown with a speed of 41 m/s. If the ball comes to rest in the catcher’s mitt in 0.085 seconds, how much force does the ball apply on the catcher’s mitt? (hint: use the impulse-momentum theorem )

6. Imagine you are ice skating with your friend. Both of you are at rest, when you shove him/her away from you. You have a mass of 65 kg and he/she has a mass of 55kg. When you shove off, you move away with a velocity of 2.0 m/s. With what velocity does your friend move away from you?

7. If a 0.25 kg cart moving to the right with a velocity of +0.31 m/s collides inelastically with a 0.5 kg cart traveling to the left with a velocity of - 0.22 m/s, what is the total momentum of the system before the collision?

8. What is the resulting velocity of the above two-car system (stuck together)?

A 5.80-g lead bullet traveling at 600 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of the bullet?

Answer in degrees celcius

PLEASE EXPLAIN ALL STEPS.

How does the Doppler effect aid police in detecting speeding motorists?

A 2.40-m-long pulse is travelling at a speed of 5.75 m/s in a spring. How long does it take the pulse to pass any point on the spring?

A 30.0-g object moving to the right at 20.5 cm/s overtakes and collides elastically with a 11.0-g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision. (Take the positive direction to be to the right. Indicate the direction with the sign of your answer.)