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A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-fifth its original speed. What is the mass of the second ball? (Use the following as necessary: m)
m2=__________.
a 100v dc battery, a resistor and a capacitor are connected in series. The capacitor is initially uncharged. estimate the capacitance of the capacitor
In a grocery store, a convex mirror with R= 4.0 m is used for surveillance. Suppose a person of height 1.7 m is 12 m from such a mirror. What is the size of the image
How fast must the bat fly, v_b, to hear a beat frequency of 205 rm {Hz}.
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
There is a straight plastic rod that is parallel to the y axis with length L and total charge Q.Point P is placed on the x axis half way down the rod
What is the magnification of an astronomical telescope whose objective lens has a focal length of 74 cm and whose eyepiece has a focal length of 2.9 cm
A block of mass 2.0 kg oscillates on a spring with spring constant k= 5 N/M. what is the period of oscillation is rad/s?, what is the new period of oscillation
1.8 kilograms of water are changed, from ice at 0ËšC into liquid water at 0ËšC determine the change in mass of the water
at time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0* above the + axis. What is the velocity of the puck at time t = 1.50 s
Measurements with microelectrodes have shown that a 0.30-nm-diameter potassium ion(K+) channel carries a current of 1.8 pA, How many potassium ions pass through if the ion channel opens for 1.0 ms
A massless pan hangs from a spring that is suspended from the ceiling. When empty, the pan is 50cm below the ceiling. What is the pan's distance from the ceiling when the spring reaches its maximum length
The potential difference between the surface of a 3.1 cm diameter power line and a point 1.8 m distant is 5.0 kV. What is the line charge density on the power line
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