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A moving particle encounters an external electric field that decreases its kinetic energy from 10090 eV to 7680 eV as the particle moves from position A to position B. The electric potential at A is
Two identical point charges (q = +7.60 x 10-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.470 m. A test charge (q0 = -2.20 x 10-8 C), with a mass of 7.20 x 10-8 kg,
A slide projector needs to create a 84 cm high image of a 2.0 cm tall slide. The screen is 240 cm from the slide. Assume that it is a thin lens. (a) What focal length does the lens need? (b) How far
How much carbon is present in the entire atmosphere lying above each square meter of the earth s surface?
A particle starts from the origin at t = 0 with an initial velocity of 4.0 m/s along the positive x axis. If the acceleration is (-5.5 + 2.5 ) m/s2, determine the velocity and position of the partic
An arrow, starting from rest, leaves the bow with a speed of 10.0 m/s. If the average force exerted on the arrow by the bow were doubled, all else remaining the same, with what speed would the arrow
How many haircuts worth of hair must be saved to soak up a 2,000 pound oil spill?
What is the magnitude and direction of the electric field at a point midway through -8µC and a 6µC charge 4cm apart.
After the gas is ejected, the mass of the astronaut (now wearing an partically empty propullsion tank) is 165kg. what percentage of the gas propellant in the completely filled propulsion unit was de
Determine the acceleration of the Moon toward Earth, using values for its mean distance and orbit period from the Terrestrial and Astronomical Data table.
A 50-cm x 30-cm x 20-cm block weighing 150 N is to be moved at a constant velocity of 0.8 m/s on an inclined surface of 20 degrees, with a friction coefficient of 0.27. Determine the force F that ne
An electric field of intensity 3.7 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.700 m long if the following conditions are true:
Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 5.45 m. The stones are thrown
In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.54 m/s, due
If your line of sight to the fish is 62.0° below the horizontal in air, and assuming the spear follows a straight line path through the air and water after it is released, determine the angle be
A student librarian picks up a 2.2 kg book from the floor to a height of 1.50 m. He carries the book 7.8 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work
A worker pushes horizontally on a large crate with a force of 308 N, and the crate is moved 5.3 m. How much work was done?
After walking 360 paces you see an opening through the woods. Which direction should you go to reach the treasure?
Snowballs are thrown with a speed of 12m/s from a roof 5.0m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 25 degrees above the horizontal. aFind the
A passenger on the Ferris wheel with a radius of 6.00m drops his keys when he is on the way up and at the 10 o'clock position. The wheel completes one revolution every 38.0 s. How far do the keys la
A charge of q = 1.50E-8 lies on an isolated metal sphere of radius 16.0 cm. With V=0 at infinity, what is the electric potential at points on the sphere's surface?What is the significance of an isol
You are serving as a technical consultant for a locally produced cartoon. In one episode, two criminals, Shifty, and Lefty, have stolen some jewels.
Find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction to the right be positive).
a) Use graph paper to construct an accurate ray diagram for this situation. B) From your ray diagram, determine the location of the image. C) what is the magnification of the image? D) check your an
The coefficient of kinetic friction between the log and the ramp is .810 and the log has a acceleration of .9m/s squared. Find the tension of the rope.