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At what speed (m/s) would a 1140-kg car have the same momentum as a 12,600-kg truck traveling at17.8km/hr,What is the car's change in momentum
A superball with a mass m = 61:6 g is dropped from a height h = 1.76m. What is the momentum change of the ball during its collision with the floor
Three boxes are connected by light strings. The force pulling on the third box is 30 N. What is the tension between box 2 and box 3
A pitcher throws a baseball with a horizontal velocity of 132 ft/s (90 mph) toward home plate that is approximately 60 ft. away. What is the vertical drop of the ball
At a certain instant, a ball is thrown downward with a velocity of 8.0 m/s from a height of 40 m. find the time when the balls collide
Consider the following fission reaction (1n)+235U --> 90Kr + 142Ba +4(1n) +6 \(\gamma\) where 90Kr and 142Ba are the initial fission fragments. What is the total energy eventually emitted
The sound level measured in a room by a person watching a movie on a home theater system varies from 65 dB during a quiet part to 95 dB during a loud part
A car is traveling at 25 m/s when it runs off the road and hits a utility pole. What is the acceleration of the airbag
A 0.196-µF capacitor is connected to a 246-V rms ac source at 44.5 Hz. determine the reactance of the capacitor
The magnetic field in a radio wave traveling through air has amplitude 2.5 10-11 T and frequency 2.9 MHz. Find the amplitude and frequency of the electric field
A 410 W Carnot engine operates between constant-temperature reservoirs at 98°C and 49°C. find the rate at which energy is exhausted by the engine as heat
You are standing at a red light on SW 8th Street at 97th Avenue. The light turns green, find the work done on your car by the frictional force
A constant electric field directed upon the positive x axis has a strength of 2000 N/. find the force exerted on the proton by the field
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. What is the work done by friction on the crate
The wind resistance on the package can be neglected. When releasing the package, at what angle?(in degrees)down from the horizontal must the pilot see the target for the package to land on the targe
What is the distance of the man from the pier after he walks to the front of the boat at a velocity of 3mph? Assume no friction between the boat and the water.
The highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15.2 cm (6 in.) long. What is the period of rotation of the rod
An air puck of mass 0.897 kg is tied to a string and allowed to revolve in a circle of radius 1.23 m on a frictionless horizontal table. What is the speed of the puck
A gas mixture occupies a volume of 1.4m^3 at a temperature of 65 C and a pressure of 350 kPa. determine the molcular weight of the gas
A helium-neon laser (?=633 nm) illuminates a diffraction grating. What is the spacing between slits of the grating
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
A rectangular loop is located next to a long straight wire carrying a current of 30.0 A. What is the direction of the net force on the loop
Your car's 28.5 W headlight and 2.50 kW starter are ordinarily connected in parallel in a 12.0 V system. What power would one headlight and the starter consume
Unpolarized light passes through two polarizers in turn with polarization axes at 41° to one another. What is the fraction of the incident light