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0.120 stone rests on a frictionless, horizontal surface. A bullet of mass 5.00 , traveling horizontally at 370 , strikes the stone and rebounds horizontally at right angles to its original direction with a speed of 200 .
a) Compute the magnitude of the velocity of the stone after it is struck.
b) Compute the direction of the velocity of the stone after it is struck.
c) Is the collision perfectly elastic? yes or no
A 0.50 kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. Find the potential energy stored in the spring when the mass is at its maximum displacement
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply. What is the current flowing through the third light bulb.
A point mass of m1 = 2.3 kg is placed at the origin. Masses m2 = 5.4 kg and m3 = 7.6 kg are placed at 3.5 m and -5.8 m on the x-axis, respectively. Find out the location on the x-axis of the center of mass.
A lamp is designed to operate at a temperature of 3100K. If the lamp is operated at a higher voltage that raises its temperature to 3500K
An oil drop carries one excess electron and weighs 9.3 x10-15 N. What electric field strength is needed to suspend the drop so it is motionless.
A person with a near-point distance of 29 cm is able to get a usable magnification of 12 with a particular magnifying glass. What is the friend's near-point distance
What is the kinetic energy of a 0.5-kg object moving at a constant speed of 2 m/s, A physics-110 student needs 500 W of Power to climb two flights of staris to get to the physics class room in 40 s
A bomb, initially at rest, explodes into three fragments that move as shown. What is the mass, m, of each of the lower two fragments in kg
Coherent light with wavelength 590 mm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 m from the slits.
q1. light passes through a 230 linesmm grating and is observed on a 1.0m wide screen located 1.3m behind the grating.
When Capacitor C1 having voltage V is connected with another capacitor C2 having zero charge in parallel with C1 what would be the dissipated energy.
a 56kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake (as shown). He releases the rope when his velocity is zero, draw the FBD of the student on the rope
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