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A 9-g bullet is fired from a rifle. It takes 3.30 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 745 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
If you have five capacitors with capacitances 1.2×10-6 F, 3.2×10-6 F, 5.9×10-6 F, and two 6.4×10-6 F in series, What is the equivalent capacitance of all five
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.
Two strings are adjusted to vibrate at exactly 188 Hz. Then the tension in one string is increased slightly. What is the new frequency of the string
Explain by how much upward force does each support exert on the beam? (Enter your answer for support 1 first, followed by your answer for support 2.)
A block of mass 16.7 kg supported by a vertical massless cable is initially at rest. estimate the magnitude of the net force acting on the mass
Two point charges q1= 2.0x10^-6 C and q2= -3.0x10^-6 C, Find the electric field and the electric potential at a point on the x-axis
A typical photovoltaic cell delivers 4.0×10?3W of electric energy when illuminated with 0.11W of light energy. What is the efficiency of the cell
Consider a 60 W light bulb with a 2.0m long tungsten filament connected to a 120V source, Determine the resistance of the filament
How do I calculate final velocity of a planet moving around a star? The things I know are the positions of star/planet initial V of the planet, Final velocity of the planet after the force of the sun has acted on it
You have a cube with electic potential that varies with V=kx3. What is the total charge enclosed in the cube
After a tornado, a 0.55g straw was found embedded 2.6cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was the speed of the straw when it hit the tree.
A circular coil 17.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
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