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Solve the all parts of following question:
Question: You throw a 20-N rock vertically into the air from ground level. You observe that when it is a height 15.2m above the ground, it is traveling at a speed of 24.7m/s upward.
Part A: Use the work-energy theorem to find its speed just as it left the ground.
Part B: Use the work-energy theorem to find its maximum height.
I need help to find its speed just as it left the ground.
a large boulder is ejected vertically upward from a volcano with an initial speed of 40.7 ms. air resistance may be
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 49.2 J and a maximum displacement from equilibrium of 0.280 m.
A turntable 1.90 in diameter rotates at 76.0 . Two speakers, each giving off sound of wavelength 31.1 , are attached to the rim of the table at opposite ends of a diameter. What is the greatest beat frequency the listener will receive from this sys..
Two small stereo speakers are 2.8 m apart and act as a double-slit interference experiment by sound waves. If the opposite wall of the room is 7.5 m away and the sound frequency is 1.4 kHz, what is the distance among the two interference maxima neare..
Two small identical conducting spheres are placed with their centers 0.70 m apart. One is given a charge of 1.2 x 10^-8 C, Find the electrostatic force exerted on one sphere by the other
A person is riding a bicycle, and its wheels have an angular velocity of 15.8 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. Through braking, the angular displacement of each wheel is 14.2 revolutions.
A 2.00 kg stone is tied to a 0.500-m length of string and swung around a circle at a constant angular velocity of 12.0 rad/s. What is the net torque on the stone regarding the center of the circle?
A 200 gram ball, moving at 6.0 m/s, is catching up and colliding elastically witha 600 gram ball that is moving along the same line
A negative point charge q1 = -4 nC is on thex-axis at x = 0.60 m. A second point charge q2=-24nC is on the x-axisat x = -1.20 m. What is the net electric field at the origin
When a 58-g tennis ball is served, it accelerates from rest to aspeed of 39 m/s. The impact with theracket gives the ball a constant acceleration over a distance of 37 cm. What is the magnitude of the netforce acting on the ball?
A black body has a mass of 3.76 kg, specific heat of 2000 J/(kg · C°), surface area of 0.198 m2, emissivity 1.00, and initial temperature 94° C. The surroundings are at a temperature of 19.2° C. Discover the drop in the blackbody's temperature during..
A 0.900m -diameter vat of liquid is 2.60m deep. The pressure at the bottom of the vat is 1.40atm
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