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971-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time?
Your personal stereo is in a dead spot caused by direct reception from an FM radio station at 92.5 MHz interfering with the signal reflecting off a wall behind you
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike the tree
Suppose 0.0450kg of steam (at 100.°C) is added to 0.450kg of water (initially at 20.5°C), Find the final temperature of the water after equilibrium is reached
Two cars have a head on collision. Both were traveling at 42m/s toward each other. Car A has a mass of 722 KG. Car B has a mass of 848KG. After impact, car A is moving backward at 2 m/s. What is car B's velocity after impact.
What is the magnitude of the electric field at a point 0.45cm away from a point charge of +2.0pC? What is the direction of the electric field
High-speed stroboscopic photographs show that the head of a 220-g golf club is traveling at 42 m/s, Find the speed of the golf ball just after impact
A ray of 600 nm light traveling through air is incident on a slab of diamond (n=2.41) at an angle of theta=60 to the normal. What is the wavelength of light inside the diamond
A ship travels 155 km from the port on a course of 35 degrees south of west to an island, then it travels 142 km east of south to a second island, Find the displacement from the starting point to the ending point
A wooden raft has a mass of 90 kg. When empty it floats in water (density 1000 kg/m3) with 67% of its volume submerged. What mass of sand can be put on the raft without it sinking
A bungee cord is stretched between two poles with a force of 390 N. What is the velocity of a wave on this bungee cord
An electron and a proton are separated by 2.4 nm, What is the magnitude of the force on the electron
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