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Can cars stop on a dime? Calculate the acceleration of a 1400-kg car if it can stop from 35 km/h on a dime (diameter = 1.7 cm) How many g's is this? What is the force felt by the 68-kg occupant of the car?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; How high above the ground will the ball be when it gets to Julie
A charge of -270e is uniformly spread through the volume of a sphere of radius 2.10 cm. What is the volume charge density in that sphere
A force in the +y direction applied at the point x=2.3 meter, y=1.4 meter gives rise to a torque of 66 N•m about the origin. Estimate what the magnitude of the force
A child playing tee ball hits a stationary 65 g ball with a 200 g bat swinging initially at 4.0 m/s. What's the bat's post-impact speed
In a model AC generator, a 498 turn rectangular coil 10.0 cm by 24 cm rotates at 124 rev/min in a uniform magnetic field of 0.6 T. What is the maximum emf induced in the coil? (In volts)
A pitched ball is hit by a batter at a 45 degree angle and now clears the outfield fence, 98 meters away. Suppose that the fence is at same height as the pitch and find the velocity of the ball when it left the bat. Neglect air resistance.
A spaceship is moving towards Earth at a speed of 0.4c. A source on the front of the ship emits light of wavelength 632 nm according to someone on the ship. What frequency and color (blue, green, yellow, or red) are detected by someone on Earth wat..
a 30000 litre water tank is 2.6m high and 4.33 m in diameter. it has two outlet pipes one at the base of the tank and
A solid cylindrical disk has a radius of0.13 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a40 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an a..
neglect air resistance for the following. a soccer ball is kicked from the ground into the air. when the ball is at a
You can ignore friction between the sled and surface of the pond. Use the work-energy theorem to find the speed of the sled at 3.00 m.
Force F = -13jhatN is exerted on a particle at r = (3ihat+5jhat)m. What is the torque on the particle about the origin
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