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Assume a golf ball leaves a tee moving at 40 m/s at an angle of 40o on ground. The vertical acceleration of the ball while on its way up is -9.8 m/s2. Using the ball, the ball hit the ground at 5.5 sec. Find at what two times is the golf ball at height of 24 meter?
an electron is accelerated through 1.60 x 103 v from rest and then enters a uniform 2.80-t magnetic field.a what is
a lightning bolt delivers a charge of 37 c to the ground in a time of 1.0 x 10-3 s. what is the current?the heating
A space station in the forf of a large wheel, 129m in diameter, rotates to provide an "artificial gravity" of 6.10 m/s^2 for people located at the outer rim.
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
a charge of 2.95 microc is uniformly distributed on a ring of radius 8.5 cm. find the electric field strength on the
q1. a parachutist descending at a speed of -13.0 ms loses a shoe at the altitude of 54.0 m.a when does the shoe reach
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3. What is the winding density n of the solenoid
A circular coil of 180 turns has aradius of 1.30 cm. (a) Calculate the current that results in a magnetic dipole moment of 2.30A·m2.(b) Find the maximum torque that the coil,carrying this current, can experience in a uniform 50.0 mT magnetic field
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
question a proton has 1836 times the rest mass of an electron. at what speed will an electron have the same momentum as
A helicopter is rising at 4.60 m/s when a bag of its cargo is dropped. The bag falls for 2.50 s. (suppose that the positive direction is upward.)
The nearest star to Earth is 4.3 light years away. How long does the trip take according to earth observers
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