Other Physics Answers

A ten-wheeler truck of mass 4500kg and traveling at 10 m/s hits the back of a parked car. The car and its occupants have a total mass of 960kg. What is the speed of the car and the truck immediately after impact assuming they are locked together? If the impact lasts for 0.4s, what force is experienced by a 75kg passenger

An axe that weighs 8.0 kg is used to strikes the log with a force of 400 N that comes

to rest in 0.04 seconds. What is the magnitude of the impulse? How fast is the axe approach the log?

How is the spectrum of the fluorescent light source different from the spectrum of the incandescent light source?

2. Your phone slips from your pocket as you’re going up a ladder of a high building. Your phone falls for 2.7 seconds before you heart it hit the cement below. include your solution.

a. At what height did the phone fall from? (Hint: Your phone’s initial velocity is zero.)

b. What was the velocity of your phone when it hit the cement?

1. A drag racer constantly accelerates at a rate of 39 m/s2 to increase its speed in a short amount of time. If the drag racer started at rest, what distance did it have to travel to reach a velocity of 33 m/s, E?

Include complete solution please

The transition temperature of a BCS superconductor with an average atomic mass of 199.5 is 4.18K. What is the transition

temperature for an average atomic mass of 203.4?

A 37.0 kg body is moving in the direction of the positive x axis with a speed of 325 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 6.3 kg, moves away from the point of explosion with a speed of 366 m/s along the positive y axis. A second fragment, whose mass is 3.6 kg, moves away from the point of explosion with a speed of 424 m/s along the negative x axis. Ignoring the effects of gravity, what is the speed of the third fragment?

Two 18.0 kg ice sleds are placed a short distance apart, one directly behind the other, as shown in the figure. A 3.96 kg cat, initially standing on sled 1, jumps across to sled 2 and then jumps back to sled 1. Both jumps are made at a horizontal speed of 4.30 m/s relative to the ice. What is the final velocity of sled 2? (Assume the ice is frictionless.) What is the final velocity of sled 1?