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During 9.75 seconds a motorcyclist changes his velocity from v1x = -30.3 m/s and v1y = 13.1 m/s to v2x =-26.1 m/s and v2y = 28.1 m/s. Find the components of the motorcycle's average acceleration during this process, aavx and aavy. Please show the steps!
A potential difference of 14.0 V is applied across a wire of cross-sectional area 5.01 mm2 and length 745 km. What type of wire is this
What is the magnitude of the current in the wire as a function of time?
A speeder is pulling directly away and increasing his distance from a police car that is moving at 27 m/s with respect to the ground. Find the speeder's speed with respect to the ground
A ball of mass 0.300 kg that is moving with a speed of 7.2 m/a collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
A point P is on a rim of a wheel of radius 2.0m. At time t=0 wheel is at rest and P is on the x-axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s2 about the center O. Find out the time t, when P returns to an original position on..
The star Sirius has a surface temperature of 9750 K and aradius 2.4 times larger than the Sun's. What is the ratio of the flux (energy per square meter persecond) emitted from the surface of Sirius to the flux emittedfrom the surface of the Sun?
Compute the final equilibrium temperature.
A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. calculate the maximum distance up the ramp which the box will reach
Find the change in internal energy using first law of thermodynamics.
The angular speed of a propeller on a boat increases with constantacceleration from 10.9 rad/s to 24.0 rad/s in 2.20 revolutions. What is the acceleration of the propeller
A 66 KG trampoline artist jumps vertcally upward from the top of a platform with a speed of 5.4 m/.s. A) What is his speed as he lands on the trampoline, 3 m below his jump off point? B) If the trampoline behaves like a spring with spring stiffnes..
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N. How much work does the string do on the boy
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