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A galago, a very small primate, can extend its legs by about 16 cm during a jump, during which it accelerates at 140 m/s2. A much larger antelope can extend its long legs by 1.5 m during a jump, but only accelerates at 16 m/s2 during this extension. Which can jump higher?
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
A converging lens (f = 14.6 cm) is located 31.4 cm to the left of a diverging lens (f = -7.91 cm), Find the overall magnification
A 35 g bullet moving at 475 m/s strikes a 4.20 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 270 m/s. How fast is the bag moving when the bullet exits.
If a 120g mass was placed at the 25cm mark, and a 20 g mass at the 12 cm mark, where must a 500 g mass be placed to balance the system?
A 1000-kg cart is rolling to the right at 5m/s. A 75-kg man is standing on the right end of the cart. What is the speed of the cart if the man suddenly starts running to the left with a speed of 10.00m/s relative to the cart.
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
Two children ride on a merry-go-round. One is 2 m from the axis of rotation and the other is 4 m from it. Which child has the larger linear speed and acceleration
Two large, parallel, conducting plates are 21cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.1 x10-15 N acts on an electron placed anywhere between the two plates.
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, For what value of q/Q>0.5 will the electrostatic force between the two parts have 1/2 of the maximum possible value
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 8.00 cm. how long does it take a ripple passing the cork to reach the shore
A tennis player tosses a tennis ball straight up and then catches it after 3.40 s at the same height as the point of release. What is the maximum height (in m) the ball reaches
A black hole attracts an object with mass m with a force of mc2RS/(2r2), where r is the distance between the object and the center of the black hole. What is the mass of this black hole
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