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The traffic light turns green and you start speeding up your car from rest at constant acceleration. In the first 5.3 seconds, your car moves 122meters. How far did it move in the first 2.46seconds?
A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, How far from the girl's initial position do they meet
work of 600 j is done by stirring and insulated beaker containing 100 gm of water?what is the internal enery of the
Louie Lemon rides on a Ferris wheel that takes 8.0 s to go once around; the radius of the wheel is 10.0 m. What is Louie's acceleration (magnitude and direction) when he reaches the lowest point of the ride
A bat at rest sends out ultrasonic sound waves at 50.5 kHz and receives them returned from an object moving directly away from it at 30.5 m/s
A conductor in the shape of a spherical shell of radii 2,5cm is charged to 20 microcoloumbs. How much work is required to move a 10 microcoloumb charge from the position (0.20) to the point (10,10)
The kinematics and dynamics of rotation around a fixed axis of a rigid body are mathematically much simpler than those for free rotation of a rigid body; they are entirely analogous to those of linear motion along a single fixed direction, which is n..
A man pushes a 2.0 kg broom at constant speed across the floor. The broom handle makes a 50 degree angle with the floor. What is the value of the frictional force opposing the motion
A cannon fires a cannonball from the top of a wall at a speed of 91.05 m/s and an angle of 31.18 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
Two trains, each having a speed of 30 km/h are headed at each other on the same straight track. A bird can fly 60km/h flies off the front of one train when they are 60 km apart and heads directly back to the first trains and so forth, what's the tota..
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
A cylinder has an inner radius of 3.50cm and a height of 58.0cm and is filled with water. What is the volume of water that fills the cylinder
A 68-{\rm kg} person rides in a 35-{\rm kg} cart moving at 11{\rm m/s} at the top of a hill that is in the shape of an arc of a circle with a radius of 45{\rm m}. What is the apparent weight of the person as the cart passes over the top of the hill
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