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1. You are driving eastbound on the interstate at 70 mi/h . You observe that you are approaching a truck in your lane at a relative speed of 20 mi/h .
a. How fast is the truck moving relative to the highway?
b. If the truck were instead traveling at this speed in the westbound lane, what would be the relative velocity between you and the truck?
2. During an auto accident, the vehicle's air bags deploy and slow down the passengers more gently than if they had hit the windshield or steering wheel. According to safety standards, the bags produce a maximum acceleration of 60g, but lasting for only 31 ms (or less). How far (in meters) does a person travel in coming to a complete stop in 31 ?
A 0.58-kg metal sphere oscillates at the end of a perpendicular spring. As the spring stretches from 0.13 to 0.26 m (relative to its unstrained length), the speed of the sphere decreases from 5.45 to 5.10 m/s. What is the spring constant of the sprin..
A 2.75-kg block is sent up a ramp inclined at an angle (theta) = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. How far up the ramp (in the direction along the ramp) does the block go
A certain ideal gas has a molar specific heat at constant volume CV = 7R/5. What is its molar specific heat at constant pressure
Consider an airplane window (area 0.34 m2). If the pressure inside the plane is atmospheric pressure and the pressure outside is 18% of Patm, what is the force on the window
A 2.0 cm × 2.0 cm parallel-plate capacitor with a 2.0 mm spacing is charged to ±1.0 nC. What is each particle's speed as it reaches the plate
a stel cable is used to keep a 2 m long 10 kg bar horizontal. one end of the bar is mounted to a wall. what tensional force now acts on the bar through the cable
When 1.0 kg of coal is burned, about 3.0 x 107 J of energy is released. how many kilograms of coal must be burned to produce the same energy as 0.79 kg of 92U235
An N-turn square coil with side l and resistance R is pulled to right at constant speed v in the positive x-direction in the presence of a uniform magnetic field B acting perpendicular to the coil. At time t = 0, the right side of the coil is at the ..
Three capacitors having capacitances of 8.3\mu F , 8.8\mu F , and 4.0\mu F are connected in series across a 38-{\rm V} potential difference. What is the total energy stored in all three capacitors
A train is traveling down a straight track at 29 m/s when the engineer applies the brakes, resulting in an acceleration of 1.0 m/s2 as long as the train is in motion. How far does the train move during a 58-s time interval starting at the instant ..
For the circuit of given Figure:- Find the output in terms of vS.- Draw a block diagram for the circuit.
Assuming a 1.46m -long string making 20.0? angle below the horizontal, find the speed of the rock. Find the period of its uniform circular motion.
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