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Q. A basketball player grabbing a rebound jumps 70.0 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 11.9 cm of this jump and (b) in the bottom 11.9 cm?
Q. A solid sphere of radius 42 cm has a total positive charge of 21 µC uniformly distributed throughout its volume. Calculate the magnitude of the electric field at 150 cm from the center of the sphere.
What types of lifestyle changes will be brought about by living in a house whose space heating and hot water needs are supplied almost completely by the sun.
In the lungs there are tiny sacs of air that are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140mm. What is the minimum improbability in the velocity of this oxygen ..
Two particles with masses m and 3m are moving toward each other along the x axis with the similar initial speeds vi. Particle m is traveling to the left, while particle 3m is traveling to the right.
What is error in the simple pendulum approximation
What is an angular acceleration
A block of mass m = 4.2 kg, moving on a frictionless surface with a Vi=2.9m/s speed makes a perfectly elastic collision with a block of mass M at rest. After the collision, the 4.2 block recoils with a speed of 0.9m/s. The mass M is closest to.
A wheel rotating about a fixed axis through its center has a constant angular acceleration of 4 rad/s^2. In cerain 4s interval the wheel turns through an angle of 80 rads.
Take the mass of the sun to be m_s = 1.99×1030 {rm kg}, gravitational constant to be G = 6.67×10-11 {rm N} cdot {rm m^2/kg^2}, and an acceleration due to gravity at the earth's surface to be g = 9.810 {rm m/s^2}.
The resolution of the eye is ultimately limited by pupil diameter. What is the smallest diameter spot an eye can produce on the retina if pupil diameter is 4.45? Assume light with a wavelength of = 600 .
Problem on the velocity of boat
what is the final position of the man. What is the magnitude of the electric field (in N/C) at the point (-2.0 m, 3.0 m).
Find out speed of the proton
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