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A volleyball is spiked so that its incoming velocity of+4.0m/s is changed to an outgoing velocity of -21 m/s. The mass ofthe volleyball is 0.35 kg.
a) what is the change in velocity of the ball?
b) what is the change in momentum of the ball?
c) what impulse does the player apply to the ball?
d) If the contact time of the spike is 0.1 seconds, what is theforce applied on the ball by the player's hand?
An object with a mass of 27.0 g displaces 845.0 ml of water when it is completely immersed. What is the buoyant force on the mass
A certain type of laser emits light that has a frequency of 7.4x 1014 Hz. The light, however, occurs as a series ofshort pulses, each lasting for a time of 4.4 x 10-11 s.(a) How many wavelengths are there in one pulse?
How much heat is released when a mixture containing 23.0 g CS2 and 23.0 g Cl2 reacts by the following equation CS2(g) + 3Cl2(g) ---> S2Cl2(g) + CCl4(g) delta H= -230 kJ
A block slides down a frictionless plane having an inclination of θ = 19.1 °. Find its speed when it reaches the bottom of the incline
A softball is hit into the air (ignore air resistance) at an angleof 35 deg at a height of 0.7m. It barely goes over a fence 2m tall which is 60maway. What is the initial velocity of the ball?
A catapult launches a rock at a 50° angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highest point is 30.3 m/s
The hoist has a 5-year life and an estimated salvage value of $1,394. Installation costs were $2,841, and freight charges were $852. Carleton uses straight-line depreciation.
question1analyse the crystal thickness pd df prf prp spl period and distance to reflector if a 3 cycle pulse emitted
If a parallel mirror He-Ne laser had a homogeneous line shape with v=1.5GHz, and small signal peak coefficient of .001/cm length=100cm and reflectance's 100 percent and 97 percent, how many longitudinal modes would initially contribute to the laser o..
A sprinter is just coming out of the starting block, and only one foot is touching the block. How large is the resultant of these forces
a beam of monochromatic green light is diffracted by a slit of width 0.550 mm. the diffraction pattern forms on a wall
Reflecting telescopes make use of a concave mirror, in place of the objective lens, to bring the distant object into focus. What is the magnifying power of a telescope
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