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An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2.
(a) If she is swimming initially in the positive x-direction, determine her average velocities symbolically in
(a) the first half of the swim,
(b) the second half of the swim, and
(c) the round trip.
(Use any variable or symbol stated above as necessary.) first half second half round trip (b) What is her average speed for the round trip? average speed = m/s
The edge of a cube consist of equal resistors of resistance R, that are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance.
Find out the edge dimension of each cube. Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. find the volume of each cube.
A rectangular block of ice 14.0 m on each side and 1.4 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.
Attaching this non-ideal voltmeter decreases the voltage across R2. Calculate the magnitude of this decrease using an emf of 14 V and R1 = R2 = 350 k?
A ballplayer catches a ball 2.75 seconds after throwing it vertically upward. With what speed did he throw it? Calculate the final & resultant velocity and acceleration.
A baseball is hit with a speed of 33.0 ms-1 at an angle of 56.0 degrees. It land's on the flat roof of a nearby building with a height of 13 m. If the ball was hit when it was 1.7 m above the ground, what horizontal distance does it travel before it ..
A certain airplane has a speed of 250.0 km/h and is diving at an angle of 30.0° below the horizontal when the pilot releases a radar decoy. How high was the plane when the decoy was released
The rotor of a toy gyroscope consists of an annular cylinder attached to cylindrical shafts by spokes. The rotor is spun by pulling on a string wrapped around shaft.
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. At some point, What is the maximum rotational speed at which the riders will not slide up the walls of the ride
The springs of a 1400 kg car compress 6.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations.
A torque of 16Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
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