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A soccer ball is kicked with a speed of 9.50 m/s at an angleof 25.0º above the horizontal. If the ball lands at the samelevel from which it was kicked, how long was it in the air?
Pretend a person can walk only at a certain pace no faster, no slower. If you time her uninterrupted walk across a room of known length, you can compute her walking speed.
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
Three resistors, 20 %u03A9, 50 %u03A9, and 82 %u03A9, are connected in series, find the potential difference across this equivalent resistance
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
A bouncy ball of mass 81 g is thrown straight into a wall at the speed of 23 m/s. What is the impulse applied to the ball by the collision
The intensity of the sound wave from a jet airplane as it is taking off is 86 W/m2 at a distance of 3.3 m. What is the intensity of the sound wave that reaches the ears of a person standing at a distance of 120 m from the runway
A uniform thin rod of mass 4.55 kg pivots about an axis through its center and perpendicular to its length. Two small bodies, each of mass 0.577 kg, are attached to the ends of the rod. What must the length of the rod be so that the moment of inertia..
A surveyor measures the distance across a straight river by the following method: Starting directly across from a tree on the opposite bank, he walks x = 102 m along the riverbank to establish a baseline. How wide is the river
A Carnot engine has a power output of 107 kW. The engine operates between two reservoirs at 30?C and 365?C. How much thermal energy is absorbed each hour
Felipe over the summer goes to six flags, he gets on a ride that starts at a height of 29m traveling at a speed of 5 m/s, what is the normal force from the seat when he is at the top of the loop
A train 400m long is moving on a straight track with a speed of 84.30km/h. The engineer applies the brakes at the crossing and later the last car passes crossing with the speed of 17.7 km/h. suppose constant acceleration; conclude how long the tra..
A bag of intravenous (iv) infusion is help up at 80 cm above the level of patient's veion, What is the downward force of the saline solution on the clot at the tip of the catheter
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