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A hunter shoots an arrow at a deer running directly away from him. When the arrow leaves the bow, the deer is at a distance of 40 m. When the arrow strikes, the deer is at a distance of 50 m. The speed of the arrow is 65 m/s. a) what should have been the speed of the deer? b) How long did the arrow take to travel to the deer?
two positive point charges are a fixed distance apart. the sum of their charges is qt. what charge must each have in
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
An aluminum cylinder with radius 1.7 cm and length 17 cm is heated to 340 °C. Find the net power this cylinder radiates into a room at 24 °C
question1a 1000 kg car carrying four 76 kg people travels over a rough washboard dirt road with corrugations 4.0 m
question an electron moves in a circular path perpendicular to the magnetic field of magnitude 0.235t. if the ke of
A novice skier, starting from rest, slides down a frictionless 41.0 incline whose vertical height is 230.How fast is she going when she reaches the bottom.
A 2.60×104- rocket blasts off vertically from the earth's surface with a constant acceleration. How far is the rocket above the earth's surface when it breaks the sound barrier
A steel cable with a total length of 29.2 m and total mass of 74 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
The moon orbits the earth at a distance of 3.85 x 108 meter. Obtain the period for the moon motion around the earth
An insulating sphere of radius R=0.10 m has a uniform surfacecharge density equal to 5.9 mC/m2. A point charge ofmagnitude 0.71 mC is 0.45 m from the center of the sphere. Themagnitude of the force exerted by the sphere on the point charge is0.024..
The two charges in the figure above are separated by a distance d = 5.00 cm, and Q = +5.70 nC. Find the electric potential at B
a neil a. armstrong was the first person to walk on the moon. the distance between the earth and the moon is 3.85 times
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