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Joe, mass MJ = 78.9 kg, is racing against Tom. When Joe and Tom have the same kinetic energy, Tom is running faster. When Joe increases his speed by 16.3%, they are running at the same speed. Find Tom's mass in kg.
A 48 kg cart is moving across a frictionless floor at 1.5 m/s. A 68 kg boy, riding in the cart, jumps off the cart so that he hits the floor with zero velocity. What is the velocity of the cart after the boy jumped
A 1.90 kg ball is attached to the bottom end of a length of fishline with a breaking strength of 10 lb (44.5 N). At what angle (measured from the vertical) will the fishline break
question1a variable reluctance sensor consists of a core a variable air gap and an armature. the core is a steel rod of
An ultracentrifuge having a diameter of 17.3 cm produces an extremely large acceleration of 2.71E+5 m/s2. estimate the angular speed of the centrifuge
A 4.8mH toroidal inductor has 140 identical equally spaced coils. If it carries an 11.5 A current, how much magnetic flux passes through each of its coils
A 41.7kg boy and a 56.4kg girl are on the surface of a frozen lake, 14.0m apart. Calculate the magnitude of the boy's acceleration
Your 85-kg friend (modeled in the picture as a box) is a window-washer and leans a ladder against a large frictionless window. What is the force from the wall on the ladder
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 3.45 × 10-11 m. Determine the magnitude..
A uniform ladder of length L and mass 5 kg rests against a smooth, frictionless, vertical wall. Find the minimum angle,between the ladder and the ground at which the ladder will not slip
A 12.7??C particle with a mass of 2.90×10?5kg moves perpendicular to a 1.01T magnetic field in a circular path of radius 23.0m, How fast is the particle moving
A 24.0 kg child plays on a swing having support ropes that are 2.20 m long. How fast will she be moving at the bottom of the swing
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary.
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