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Two 1.50 V batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.230 omh the other an internal resistance of 0.150 ohm. When the switch is closed, a current of 600 mA occurs in the lamp.
(a) What is the lamp's resistance?
_____ ohm
(b) What fraction of the chemical energy transformed appears as internal energy in the batteries?
_______%
What is the car's maximum speed on an incline. A fire hose held near the ground shoots water at a speed of 5.4 m/s, At what angle(s) should the nozzle point in order that water land 2 m away.
When he accelerates from a stoplight, the tassel deflects backward toward the rear of the car hanging at an angle of 6.30° relative to the vertical. Find the tension in the string holding the tassel
A convex mirror has a focal length of -30.0 cm. A 15.0-cm-tall object is located 30.0 cm in front of this mirror. determine the location and size of the image
Find out whether or not the measurement of net income for a merchandising company conceptually is the same for a service company.
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
A lens of focal length 15.0 cm is used to create an image of the Full Moon. What is diameter of the image? The Moon's radius and average distance from Earth are 1.74× 106m and 3.85× 108 m, respectively
In a head-on collision, a car stops in 0.17s from a speed of 30m/s . The driver has a mass of 78kg, What force is applied to the driver by his seat belt during that fraction of a second
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
a spherical drop of water carrying a charge of 90pc has a potential of 270 v at its surface, what is the potential in the new drop
A 11 g bullet is fired horizontally into a 109 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 142 N/m. The bullet becomes embedded in the block.
A stone is thrown vertically upward with a speed of 12.3 m/s from the edge of a cliff 84.6m high. What is the speed just before hitting.
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