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A backpack full of books weighing 52.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally, as indica
Having vertical sides. If your barge goes up the Mississippi River, which is fresh water, how much extra mass can you carry without sinking?
If the temperature is increased to 320°C and the potential difference across the wire remains constant, what is the power delivered?
The only force acting on the particle is the electric force. what point is at the higher potential? give your reasoning.
(a) At this average price, calculate the cost of leaving a 140-W porch light on for two weeks while you are on vacation?
A car of mass = 1500 kg traveling at 40.0 km/hr enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. Use g = 9.80 m/
The block, with the bullet embedded, slides 5.0cm across the table. The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet?
If a drop is to be deflected a distance of 0.350 by the time it reaches the end of the deflection plate, what magnitude of charge must be given to the drop?
Two astronauts, each having a mass of 70.0 kg, are connected by a 11.0 m rope of negligible mass. They are isolated in space, orbiting their center of mass at speeds of 5.40 m/s.
An electron is moved from an initial location where the potential is Vi=30V to a final location of Vf=150V. what is the change in the electrons potential energy?
Suppose that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 78.5 lb/in2 and the area of contact betwe
Another charge q2=+4.58 micro coulomb from the point x=+0.200 m, y=0 moves to x=+0.100 m, y=+0.100 m. how much work is done by the electric force on q2?
Find the magnitude and direction of the force that our planet's magnetic field exerts on this wire if is oriented so that the current in it is running (a) from west to east.
The magnitude of the external magnetic field is changing at a rate of ΔB/Δt = 0.883 T/s, thereby inducing a current in the coil. Find the magnitude of the magnetic field at the center of
What is the magnitude of the force on an electron that is in the region between the plates at a point exactly 2.52 mm from the positive plate?
An airtight box has a removable lid of area 1.00 10-2 m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 7.00 104 Pa. The inside of the box is comple
A Geiger counter is a device used to detect ionizing radiation (radiation which is powerful enough to ionize an atom). What is the electric field at the inner surface of the cylinder?
Charge of uniform density (80 nC/m^3) is distributed throughout a hollow cylinder region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the electr
Determine the electric potential as a function of distance r from the center of the sphere for A) r>ro, B) r<ro. Take V=0 at r=infinity. C) Plot V versus r and E versus r.
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 20km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this mot
The charge on an electron is 1.6 × 10-19 C and the Coulomb constant is 8.99 × 109 N · m2/C2. How many electrons have been removed from the sphere to raise it to this potential?
Three point charges, two positive and one negative, each having a magnitude of 20 uC are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrosta
Estimate the height of the shoulders above the ground and the radius of their arm reach. Draw a free body diagram of the forces acting on the dancer on the right, using T for tension and N for the n