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Apart from the continuous loss of mass from the Sun and increase in the mass of Earth (Both of which are relatively small.) why does the gravitational attraction between the Earth and Sun vary? Find at what time of year is it greatest?
A rock is thrown off a bridge of height 75m. at an angle theta=25 degrees with respect to the horizontal. The initial speed of the rock is 15 m/s. compute the maximum height reached by the rock?
a an egg is thrown nearly vertically upward from a point near the cornice of a tall building. it just misses the
Neglect air resistance, as well as any energy absorbed by the pole, and clarify her altitude as she crosses the bar.
a to a closed system we add 28 kj of heat while its internal energy decreases by 24 kj. how much work do we gain or
two identical cars hit each other and lock bumpers. in each of the following cases what are the speeds of the cars
in a certain region of space electric field is along the z-direction throughout. the magnitude of electric field is
Y You own an 800 kg 4WD truck and you decide to go help a friend who got stuck on a steep snowy mountain road in his 400 kg Porche. What is the acceleration of each vehicle
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
Romeo is chucking pebblesgently up to Juliet's window, and he wants the pebbles to hit thewindow with only a horizontal component of velocity. How fast are the pebbles going when they hit her window
Consider a system of 2 particles , each of which can stay in 0,ε,3ε.Let temp =T=(kB)^-1.
A very massive object -almost innitely massive - moving with velocity v1 = 100m/s hits a very light object - "massless" - at rest. What is the final velocity of the very light object
A proton initially has a v = 4.0i-2.0j+3.0k and then 4 sec later has a v (Vector) = -2.0i - 2.0j+5.0 k (in m/s). For that 4.0 second, Determine the protons average acceleration
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