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The hammer throw is a track-and-field event in which a 7.0-kg ball (the ''hammer''), starting from rest, is whirled around in a circle several times and released. It then moves upward on the familiar curving path of projectile motion. In one throw, the hammer is given a speed of 31.0 m/s. For comparison, a .22 caliber bullet has a mass of 2.6 g and, starting from rest, exits the barrel of a gun with a speed of 412 m/s. Determine the work done to launch the motion of both the hammer and the bullet.
(a) the hammer
(b) the bullet
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Calculate the probable percent error in the volume
A fixed line charge +λ on the x-axis extends from x = d to x = 2d, and a fixed line charge -λ on the y-axis extends from y = d to y = 2d. Find the work required to bring a test point charge Q from infinity to the origin. Does the answer depend on the..
A coffee filter of mass 1.4 grams dropped from a height of 2 m reaches the ground with a velocity of 0.6 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.
In a certain radio wave, the shortest distance between positions where the electric and magnetic fields are zero is 0.98 m. Determine the frequency of this radio wave.
What mass can it support in water before sinking. Two concentric spherical shells with uniformly distributed masses M1 = kg and M2 = kg are situated as shown . Find out the magnitude Find the magnitude of the net gravitational force on a particle ..
question a glass rod rubbed with silk acquires a charge of 1.0times10-9 c.1-what is the charge on the silk?2-how many
6 kg of a substance undergoes a process from 1.00 MPa, 0.50 m^3 to 500 kPa, Find the work in kJ for the path given below and Find the heat transfer for the process in Btu. PV^1.6 = constant
q1. if a car travelling at 64 kmh will skid 24 m when its brakes lock how far will it skid if it is travelling at 140
question an electric field exerts a force of 3.00 x 10-4 n on a positive test charge of 7.50 x 10-4 c. find the
A girl walks 26 meters at an angle of 39° west of south. How far west of her starting point is she
In the Bohr model of the hydrogen atom, an electron in the 7th excited state moves at a speed of 4.47 104 m/s in a circular path having a radius of 2.59 10-9 m
A projectile launcher has a muzzle velocity of 15m/s and is aimed 60 degree above the horizontal. How far horizontally did the ball travel before it hit the floor
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