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Problem 1: A ball is thrown from atop a cliff with an initial speed of 30 m/s at an angle of 40o above the horizontal. The cliff is 40 m above level ground. Neglect the effects of air resistance.
A) How long is the ball in the air?
B) Where does the ball strike the level ground?
C) What is the speed and direction of the ball's velocity vector just before it strikes the ground
Problem 2: (a) What are the period and speed of the motion of a person on a carousel if the person has an acceleration magnitude of 0.80 m/s2 when she is standing 4.0 m from the axis? (b) What are her acceleration magnitude and speed if she then moves in to a distance of 2.0 m from the carousel center and the carousel keeps rotating with the same period?
an early non-quantum model of the hydrogen atom had a point-like electron undergoingnbspuniform circular motion around
A disc is rotating about its center. What is the speed of rotation of the disc
A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor
Consider an airplane that normally has an air speed of 90 km/h in a 95 km/h crosswind blowing from west to east. Calculate its ground velocity when its nose is pointed north in the crosswind.
A cannon fires up at an angle of 30 degrees above the horzontal with a muzzle velocity of 40 m/s. How far from the base of the wall dos the cannon ball travel
An inductor with an inductance of 2.60H and a resistor with a resistance of 14.0ohms are connected to the terminals of a battery with an emf of 7.00V, obtain the initial rate of increase of current in circuit
A jet plane traveling 1840km/h (511m/s ) pulls out of a dive by moving in an arc of radius 5.40km , what is the planes acceleration in g's?
Now a peg is placed 4/5 of the way down the pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its startin..
(8c1p14) Time standards are now based on atomic clocks. A promising second standard is based on pulsars, which are rotating neutron stars, What is the mass of gasoline (? = 0.680 g/cm3) in a 94.6 L gasoline tank? (kg)
The drawing shows a bicycle wheel resting against a small step whose height is h = 0.108 m. What is the magnitude of the force when this happens
Star A and B have bolometric magnitudes ma = 5 and mb = 10. If both stars have same absolute magnitude, M, what's the ratio of their distances
A 130g oscillator has a speed of 124cm/s when its displacement is 2.10cm, What is the oscillator's maximum speed
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