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An object rotates about a fixed axis, and the angular position of a reference line on the object is given by ? = 0.60e8t, where ? is in radians and t is in seconds. Consider a point on the object that is 8.0 cm from the axis of rotation. At t = 0, what are the magnitudes of the point's
(a) tangential component of acceleration and
(b) radial component of acceleration?
Two farmers are standing on opposite sides of a very large empty field that is 520.6 m across. What is the temperature of the air
A tennis ball of mass 0.0611 kg is served. It strikes the ground with a velocity of 55.6 m/s (124 mi/h) at an angle of 21.2° below the horizontal. what average force did the ground exert on the ball
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
A man standing on the ground throws a pebble with an initial veloctiy of 14m/s at an angle of 70 degrees above the horizontal, How high above the ground is the window
A 2 kg mass passes through the origin (x=0) with initial velocity -3m/s to the left on a horizontal frictionless table, Find the values of x which the mass has zero acceleration
Rotational Inertia and Torque-A solid uniform cylinder, of mass M and radius R, is rolling down without slipping (static friction), Calculate the magnitude of the acceleration of the cylinder
A box-shaped piece of concrete measures 3ft by 2ft by 0.5ft. Find the buoyancy force that acts on it when it is submerged in water
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the first excited state
F ind the speed of the golf ball just after impact
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 6.24 liters of water
A single loop of wire with an area of 0.0900 m2 is in a uniform magnetic field that has an initial value of 3.80 T, is vertical to the plane of the loop, and is decreasing at a constant rate of 0.190 T/s.
A jet flying at 132 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.88 105 kg
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