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It takes 4.186 Joule of energy to raise the temperature of 1 gram of water by 1oC. Determine how fast would a cricket have to jump to have that much kinetic energy?
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 30km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out the electric potential difference.
A 1.20kg cart starts down a ramp with a speed of 1.50 m/s. The ramp is 0.750m high, inclined at an angle of 12 degrees by respect to the level ground at the bottom, and the coefficient of friction along the plane is 0.222. When the cart gets to the b..
A 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, kinetic energy decreases to 240J from 470J. How high does she rise during this interval? Avoid air resistance.
An ac generator with a frequency of 1.04 kHz and an rms voltage of 22.2 V is connected in series with a 2.20 k omega resistor and a 320mH inductor. What is the power factor for this circuit? cos (phi)
A turntable rotates with a constant angular acceleration 2.20rad/s^2. What was the angular velocity of the wheel at the beginning of the time interval 4.40s
Person a is 20 ft to the right of person b. Person a recieves a ball and throws it 18.9 m away, angle of 25 degree celcius to the right horizontal, what is his average velocity(magnitude and direction) if he takes a straight path
An engine removes 300 J from a reservoir at 290 K and exhausts 250 J to a reservoir at 200 K. What is its efficiency? How much more work could be done if the engine were reversible?
A proton of charge +1.60Ã-10-19 C and mass 1.67Ã-10-27 kg is introduced into a region of B = 0.149 T, What is the radius of the proton's path
Calculate each star's speed, and state whether it is moving toward or away from us.
A proton, q=1.60 x 10^19C moves 10.0 cm on a path parallel to the direction of a uniform electric field of strength 3.0 N/C What is the change in electric potential energy
A toaster uses a Nichrome heating wire. When the toaster is turnedon at 20° C, the initial current is 1.50 A. A few secondslater, the toaster warms up and the current now has a value of 1.28A.
A typical compact disc stores information in tiny pits on the disc's surface. What's the frequency of electromagnetic waves that have a wavelength equal to the typical CD pit size
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