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An 19.3kg box is released on a 36.1o incline and accelerates down the incline at 0.276m/s2. What is the magnitude of the friction force impeding its motion?
What should the charge (sign and magnitude) of a particle of mass 1.44 be for it to remain stationary when placed in a downward-directed electric field of magnitude 630 ? Use 9.81 for the magnitude of the acceleration due to gravity.
A cannon tilted upward at = 31 fires a cannonball with a speed of 94 . At that instant, what is the component of the cannonball's velocity
Consider pendulum formed from a meter stick pinned at the end. The center of mass (COM) is at the middle of the ruler, and the COM rotational inertial is (see Table 10.2 in text) for meter( Text is principles of physics by Serway & Jewett). When t..
A uniform thin rod of mass 4.55 kg pivots about an axis through its center and perpendicular to its length. Two small bodies, each of mass 0.577 kg, are attached to the ends of the rod. What must the length of the rod be so that the moment of inertia..
A certain spring is found not to obey Hooke's law; it exerts a restoring force Fx(x)=??x??x2 if it is stretched or compressed, Calculate the potential energy function U(x) for this spring. Let U=0 when x=0
You and Maria each own identical spaceships. As you fly past Maria, you measure her ship to be 96 m long, How fast is Maria moving relative to you
Two cars are initially at rest at the starting line of a 100-m long track. the first car accelerates at a rate of 2.50 m/s^2. how far behind is the first car
A 11.0 kg monkey starts to climb a long rope to reach a banana located at a height of 6.50 m, Calculate the least amount of time the monkey could take to reach the banana without breaking the rope
Name the subtype of equilibrium (out of thermal, phase, mechanical and chemical equilibriums) that is at play in the following situations? A) Vapor floating over the surface of a lake on a cold winter morning. (4) B) Measuring the temperature of a..
A radio station broadcasts at a frequency of 600,000 Hz. Know that radio waves have a speed of 3.00 x 10^8m/s, what is wavelength of these waves.
What is the phase difference in a Young's double slit experiment where the intensity is half that of the central maximum
A 2.25kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.6N is required to hold the mass at rest when it is pulled 0.215m from its equilibrium position, Calculate the total energy of the oscillating..
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