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A 98.8-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is ?k = 0.596.
(a) What is the magnitude of the frictional force?
(b) If the player comes to rest after 1.30 s, what is his initial speed?
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. What is the size of the image of the tree on your retina
The earth spins on its axis once a day and orbits the sun once a year (365.24 days). Determine its angular velocity as it revolves around the sun
In the vertical case the maximum tension in the string is 18.0% larger than the tension that exists when the circle is horizontal. Identify the speed of the stone.
The drawing shows four point charges. The value of q is 1.83 µC, and the distance d is 0.99 m. Find the total potential at the location P
how long must the engine burn in order to reach this speed. What will be the equilibrium temperature when a 259 block of copper at 258 is placed in a 137 aluminum calorimeter cup containing 836 of water at 16.
What is the acceleration of the bullet while it is in the barrel, For how long is the bullet in the barrel
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
A 64 Ω resistor is connected in parallel with a 115 Ω resistor. This parallel group is connected in series with a 20 Ω resistor. The total combination is connected across a 15V battery.(a) Find the current in the 115 Ω resistor.(b) Find the power ..
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. What is the difference in temperature between the inner and outer sufaces of the aluminum bottom of the pot
A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding, What is the true frequency of the police siren
A 420g oscillator has a speed of 128.5cm/s when its displacement is 3.30cm and 59.5cm/s when its displacement is 5.40cm .what is the oscillator's maximum speed
Find the self-inductance of a solenoid 44cm long and 6.0cm in diameter that contains 2000 turns of wire
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