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While filming a movie, a (well-protected) stuntperson was required to crash into a tree. The car was originally going at 35 km/h. Assume it took 0.4 seconds for the tree to bring the car to a stop. The mass of the driver and the car is 450 kg.
a. What average force did the driver experience? Include a direction in your answer.
b. What average force did the tree experience? Include a direction in your answer.
c. How many g's of acceleration did the driver experience?
A skateboard track has the form of a circular arc with a 3.60m radius, What is the normal force exerted on the skate boarder at the bottom of the circular arc
A 0.43m long wire is located entirely inside a uniform magnetic field B = 0.31T. The wire is perpendicular to the direction of the magnetic field. Calculate the size of the current
A parallel-plate capacitor has an area of 5.15 cm2, and the plates are separated by 1.05 mm with air between them. It stores a charge of 337pC. What is the potential difference across plates of the capacitor.
An rms voltage of 91 V is applied to a purely resistive load of 6.00 . Find values for the maximum voltage applied and the rms current supplied
A hydrogen atom (particle 1) is initially at rest. A neutron (particle 2) initially moves to the east at speed v, colliding with the hydrogen atom. Immediately after the collision, the neutron is moving to the south, and the hydrogen atom is moving a..
Suppose a piano string is supposed to be tuned to 440 Hz, but in reality it is tuned to 441 Hz. How far out of tune is it, expressed in cents?
A 2100-kg truck traveling north at 41 km/hr turns east andaccelerates to 60 km/h. What is the change in the truck's kinetic energy
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
If 6/3Li is struck by a slow neutron; it can form 4/2He and another nucleus. What is the second nucleus
why does a tile or wooden floor feel colder ahtn a carpeted floor when both are at the same temp? (assume both below room temp) which would feel hotter if they were at the same temperature above room temperature? why?
A parallel plate capacitor has a voltage of 111V appliedacross its plates, then the voltage source is removed. What is the voltage across its plates
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velocity of the system
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