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A 2.1 kg block of wood rests on a long tabletop. A 11.8 g bullet moving horizontally with a speed of 156 m/s is shot into the block and sticks in it. The block then slides 26.4 cm along the table and stops. Find the magnitude of the frictional force between the block and the table.
The planet Venus requires 225 days to orbit the sun, which has a mass M = 1.99 x 1030 kg, in an almost circular trajectory. Calculate the radius of the orbit of Venus and the orbital speed of Venus as it circles the sun.
You are driving a car that weighs 1500 kg at 50 km/h, How much force would you need to apply on the wheels of your car through the breaks in order to be able to stop short of hitting the cat
A 2.90 H coil with a resistance of 6.41×101 ? is in series with a 1.14×103 ? resistor. What is the peak value of the potential difference across the coil
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
You are designing a spacecraft going to Mars. For the on-board electronics, you need a minimum amount of power in order to function properly. What is the efficiency of the solar cells
235U loses about 0.1 percent of its mass when it undergoes fission. A. How much energy is released when 1 kg of 235U undergoes fission
A resting bat sends out ultrasonic waves at 50 kHz towards an insect that is approaching the bat with a speed of 20.0 m/s. What is the frequency of waves heard by the insect
An airplane is travelling horizontally with a speed of 50 m/s 500m above the ground. How long will the package take to strike the ground
question1the press box at a baseball park is 36.0 ft above the ground. a reporter in the press box looks at an angle of
How far from the dog would the suitcase land? You can ignore air resistance.
A jet of water squirts out horizontally from a hole near the bottom of the tank, What is the height, h, of the water level in the tank
A ball is thrown upward from a platform 4.6 m high with a speed of 16 m/s, What is the magnitude of its velocity when it hits the ground
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