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Alan leaves Los Angeles at 8:00 a.m. to drive to San Francisco, 400 mi away. He travels at a steady 47.0mph . Beth leaves Los Angeles at 9:00 a.m. and drives a steady 56.0mph .
How long does the first to arrive have to wait for the second?
When a nucleus of ^235 U undergoes fission, it breaks into two smaller, more tightly bound fragments. Calculate the binding energy per nucleon for the fission product
The expanding gases that leave the muzzle of a rifle also contribute to the recoil. A .30 caliber bullet has mass 7.20×10?3kg, Find the momentum of the propellant gases in a coordinate system attached to the earth as they leave the muzzle of the rifl..
Several different waves were created using the same string. The tension of the spring is was kept the same for each wave. What charecteristic is the same for all waves
A generator rotates at 87Hz in a magnetic field of 9.0×10?2T . It has 600 turns and produces an rms voltage of 180V, find the area of each turn of the coil
Moonlight is primarily reflected sunlight. If the moon reflects 15% of the photons that strike its surface, and we know that the intensity of sunlight at earth is I, what is the intensity of moonlight at the Earth during a full moon
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
Two ants race across a table 62 cm long. One travels at 4.77 cm/s and the other at 2 cm/s. When the first one crosses the finish line, how far behind is second one. What am I trying to solve for distance, speed, or time.
A block of mass 200g, sliding with a speed of 12 cm/sec on a smooth level surface, makes a head-on, elastic collision with a block of unknown mass, Determine the mass of the second block
An airplane flies due west at a velocity of 645 kilometres per hour (km/h). The wind blows from the north at a velocity of 125 kilometres per hour (km/h). Find the plane resultant velocity?
On an icy road, a 1200 kg car moving at 55 km/h strikes a 430 kg truck moving in the same direction at 43 km/h. Find the speed of the wreckage
A shot-putter accelerates a 7.3kg shot from rest to 17m/s, If this motion takes 1.3s , what average power was developed
To examine a particular blood sample in biology lab, a student uses a compound microscope set to have a magnification of -4530. What is the distance between the blood sample and the objective lens
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