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A shot putter launches a 7.240 kg shot by pushing it along a straight line of length 1.650 m and at an angle of 34.00° from the horizontal, accelerating the shot to the launch speed from its initial speed of 2.500 m/s (which is due to the athlete's preliminary motion). The shot leaves the hand at a height of 2.110 m and at an angle of 34.00°, and it lands at a horizontal distance of 14.00 m. What is the magnitude of the athlete's average force on the shot during the acceleration phase? (Hint: Treat the motion during the acceleration phase as though it were along a ramp at the given angle.)
A skateboarder, starting from rest, rolls down a 13.7-m ramp. When she arrives at the bottom of the ramp her speed is 6.28 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 33.3 ° with respec..
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
A cylinder of length L = 18 cm and radius R = 5.4 cm has its center at the origin and its axis along the x axis such that one end is at x= +9 cm , What is the net charge inside the cylinder
A tennis ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. How long has the ball been in the air when it returns to its original position
In preparation for this problem, review Conceptual Example 7. After 0.640 s, how far beneath the cliff top is the pebble
In a certain region, the earth's magnetic field has a magnitude of 4.7 × 10-5 T and is directed north at an angle of 69° below the horizontal, Determine the bullet's electric charge
0.0023 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2, find the electric field energy density between the plates
Calculate the number of electrons in a steel (iron) pinhead. The pinhead may be assumed to be spherical with diameter 2 mm
A uniform electric field of 2000 N/C is in a direction 600 from the x-axis. A charge of -1.20 mC starts from the origin O, calculate the potential at B and at the origin
A solenoid 10.0 cm in diameter and 79.9 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What power must be delivered to the solenoid
An object acted on by three forces moves with constant velocity. Find the direction and magnitude of the third force acting on the object
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