Physics, 06.04.2021 20:10 dontcareanyonemo
You are using a constant force (same amount of force each time) to accelerate a kid on a sled. Suddenly another kid jumps on, doubling the mass you are pulling. What happens to the acceleration?
Answers: 1
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How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?
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An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?
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Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
Answers: 1
You are using a constant force (same amount of force each time) to accelerate a kid on a sled. Sudde...
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