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In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0255 kg and the mass of the pendulum is 0.250 kg, how high will the pendulum swing if the marble has an initial speed of 5.55 m/s? Assume that the mass of the pendulum is concentrated at its end so that linear momentum is conserved during this collision.
By considering the torques about the centers of the ball joints in your shoulders, estimate the force your deltoid muscles (those muscles on top of the shoulder) should exert on your upper arm to keep your arm held out and extended at shoulder level.
a 122-cm-long 5.00 g string oscillates in its n 3 mode with a frequency of 190 hz and a maximum amplitude of 5.50 mm.
An astronaut on the moon applies a100N horizontal force to a 10kg mass at rest on a table. At what rate does the mass accelerate
What is the magnitude of the positive and negative charge? Two conducting spheres have identical radii. Initially they have charges of opposite sign and unequal magnitudes with the magnitude of the positive charge larger than the magnitude of the ..
A cart of mass M = 1.6 kg can roll without friction on the level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.7 kg.
Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1400 W/m2. What would the intensity be at Mercury
Mary needs to row her boat across a 170m -Wide River that is flowing to the east at a speed of 1.4m /s. Mary can row with a speed of 3.8m/s. What is her speed with respect to the shore
X rays with a wavelength of 0.24nm undergo first-order diffraction from a crystal at a 53%u2218 angle of incidence. At what angle does first-order diffraction occur
An explorer is caught in a whiteout (in which the snowfall is thus thick that the ground cannot be distinguished from the sky) while returning to base camp. Obtain how far must he now travel to reach base camp
a catapult launches a test rocket vertically upward from a well giving the rocket an initial speed of 80.2 ms at ground
Fifteen clowns are late to a party. They jump into their sporty coupe and start driving. Eventually they come to a level curve, with a radius of 27.5 m. Find the top speed at which they can drive successfully
Explain the physical reason for this observed behavior
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