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Q1. A cannonball shot with the initial velocity of 133 m/s at an angle of 59° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is the cannonball going when it hits balloon?
Q2. A bird sitting in a tree is travelling at 40 km/s relative to the faraway Sun. When the bird drops to the ground below, does it still go 40 km/s, or does this speed become zero?
A 0.30-kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. What is the total work done on the particle as it moves from A to B
The air-conditioning system of a department store is designed to maintain a pressure of 0.22 in. find the net force due to pressure on a rectangular display window
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
Conclude the electric field at the origin
A friend of yours is loudly singing a single note at 410 Hz when racing toward you at 26.1 m/s on a day when the speed of sound is 339 m/s. What frequency does your friend hear if you suddenly start singing at 410 Hz.
A person pulls a toboggan for a distance of 41.7 m along the snow with a rope directed 24.3 ° above the snow, How much work is done on the toboggan by the tension force
The gravitational force between two electrons that are 0.97 m apart is 5.76 multiplied by 10-71 N. Find out the mass of an electron. (Use G = 6.67 10-11 N · m2/kg2.)
A screen 1-m wide is 2.0 m from a pair of slits illuminated by 633-nm laser light, with the screen's center on the center line of the slits. How many fringes will be visible on the screen
The pilot of an airplane travelling 170 wants to drop supplies to flood victims isolated on a patch of land 200 below. The supplies must be dropped how many seconds before the plane is directly overhead.
While a roofer is working on a roof that slants at 43.0 above the horizontal, If it starts 4.60m from the lower edge of the roof, how fast will the toolbox be moving
The magnitude of each force is 204 N, the force on the right is applied at the angle 29 and the mass of the block is 12kg. The coefficient of friction is 0.138. The acceleration of gravity is 9.8 m/s2. What is the magnitude of the resulting accelerat..
One way to decrease your use of fossil fuels is to heat your water via solar radiation. A solar water heater runs cold water through dark, radiation absorbing tubing.
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