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A ball attached to a string starts at rest and undergoes a constant angular acceleration as it travels in a horizontal circle of radius 0.30 meter. After 0.65 second, the angular speed of the ball is 9.7 rad/s. Evaluate the tangential acceleration of the ball?
A boy on a 2kg skateboard initially atrest tosses an 8kg jug of water in theforward direction. find the boy's mass
A 6.0-V battery is connceted in series with a 29-mH inductor, a 110-Ω resistor, and an open switch. After the switch is closed, how much time will elapse before the current in the circuit will be equal to 12 mA?
Two point charges Q1 = +4.10 nC and Q2 = ?2.60 nC are separated by 45.0 cm. What is the potential energy of the pair of charges
Using a 695-nm wavelength laser, you form the diffraction pattern of a 0.103-mm wide slit on a screen. How far is the screen located from the slit
A 1750-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 24 m/s. At what angle is the hill inclined above the horizontal
The water molecule H2O, with a permanent dipole moment of magnitude of 6.2x10^-30 Cm, What force does the ion exert on the water molecule
Two blocks of the same mass 0.5 kg head-on collide on a frictionless horizontal surface. The velocities before the collision are v1 = 1.0 m/s, v2 = -3.0 m/s. What is the center-of-mass velocity
Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more.
A Boeing 747 jet with a wingspan of 60.0 m is flying horizontally at a speed of 324 m/s over Phoenix, What voltage is generated between the wingtips
Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. what force does the seat belt exert on each driver
What is the de Broglie wavelength of a neutron that has fallen 0.80m in a vacuum chamber, starting from rest
A mass m1 = 4.7 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string. What is the tension in the string as the block falls
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