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During a day time football game you notice that a player's reflective helmet forms an image of the sun 3.2 cm behind the surface of the helmet, find the radius of curvature of the helmet.
Consider a large uniform rectangle, length L on the long edge and width W on the short edge. Calculate the moment of inertial of the rectangle
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.50 m/s collides head-on with a 0.84 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?
A 2.8-cm-diameter parallel-plate capacitor has a 2.4mm spacing. The electric field strength inside the capacitor is 1.4×105V/m. How much charge is on each plate
The spaceship Lilac, based on the Purple Planet, is 755 m long, as measured at rest. At what fraction of the speed of light is Lilac moving
A typical wall outlet voltage is 120 volts in the United States. calculate the number of turns on the secondary coil of the adapter transformer
A satellite has a mass of 110 kg and is located at 1.96 106 m above the surface of Earth, What is the magnitude of the gravitational force on the satellite
Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. What was the temperature of the water before the insertion of the thermometer
The shot leaves the hand at a height of 2.110 m and at an angle of 33.60°, and it lands at a horizontal distance of 14.00 m. Illustrate what is the magnitude of the athlete's average force on the shot during the acceleration phase?
A 60 kg crate is lowered using arope over a fixed support. The rope exerts a constant upward forceof 500 N.? How fast is the crate traveling when it hits the floor
what is the coefficient of kinetic friction between the box and the tabletop.
A bullet with mass m = 5.21 g is moving horizontally at v = 434 m/s when it strikes a block of hardned steel with mass M = 14,8 kg (initially at rest). What is the impulse (kg m/s) exerted on the block
A coffee cup heater and a lamp are connected in parallel to the same 120-V outlet. Find the resistance of the lamp
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