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A baseball leaves the batter's bat at 30° above horizontal. The ball undergoes a horizontal displacement of 140.0 m and a vertical displacement of 20.0 m before being caught in the stands by a fan.
(a) With what speed does the ball leave the bat?
(b) What is the acceleration of the ball when it reaches maximum height?
(c) What is the speed of the ball when it reaches maximum height?
The average resistivity of the human body is 5 ohm*m. The conducting path between two hands is approximated as a cylinder with length 1.6m, what is the resistance between the hands
A cancer treatment called the gamma knife uses focused 60Co sources to treat tumors. Each 60Co nucleus emits two gamma rays, Determine the effective radiation dose received by the tumor
A viscous fluid is flowing through a small tube at a rate of 2.00 × 10-4 m3/s. what is the rate of flow of the fluid
A 3.90-kg object is attached to a spring and placed on frictionless, horizontal surface. Find the total energy of the oscillating system
A plane has an airspeed of 142m/s. A 16.0m/s wind is blowing soutward at the same time as te plane is flying. what is the magnitude of that velocity
A skier starts at the top of a hill angled at 30 degrees from the horizontal. The hill is 100 meters long. how fast is he going when he reaches the bottom of the hill
The engine of an aircraft propeller delivers an amount of power 171hp to the propeller at a rotational velocity of 2360 rev/min the torque= 516 Nm, How much work does the engine do in one revolution
Solid cylindrical copper rod 0.2m long has one end maintained at temperature 20K, other end blackened and exposed to thermal radiation from surrounding walls at 500K. what is the temperature of the blackened end
q1. a curve of radius 40 m is banked for a design speed of 100 kmh. if the coefficient of static friction is 0.30 wet
A 5.3MeV (kinetic energy) proton enters a 0.15T field, in a plane perpendicular to the field. What is the radius of its path
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 23.0 m/s at an angle 28.0 degrees; find What is the distance between the two girls
q1. if the proton is released from rest in a uniform electric field does equivalent electric potential at the protons
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