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You have a lens whose focal length is 12.7 cm. You place an object on the axis of the lens at a distance of 6.25 cm from it. How far is the object\'s image from the lens (as a positive quantity)?
Assume the mass of the beam is negligible when compared with the mass of the floodlight. Find out the force FT provided by the cable. The acceleration of gravity is 9.81 m/s2 .
A proton moving at 7.20 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field
What is the average induced EMF. what is the magnitude of the velocity of raindrops relative to the car.
Heather and Jerry are standing on a bridge 51 above a river. Heather throws a rock straight down with a speed of 12. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Ignore air resistance.
A transverse pulse moves along a stretched cord of length 5.55 m having a mass of 0.130 kg. If the tension in the cord is 13.6 N, find the wave speed
The inner surface is negative relative to the outer surface. Explain how much work is required to eject a positive sodium ion (Na+) from the interior of the cell?
Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.
A 0.88 kg mass attached to a vertical spring of force constant 196 N/m oscillates with a maximum speed of 0.40 m/s. Find the following quantities related to the motion of the mass.
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.740 m wide. Sound of frequency 708 Hz is coming through the entrance from within the room.
Because of your knowledge of physics, you head your boat 44° west of north and have a velocity of 8.0 m/s due north relative to the shore. Illustrate w hat is the velocity of the current? What is your speed relative to the water.
An object with mass 3.7kg is executing simple harmonic motion, attached to a spring with spring constant 270N/m, find the maximum speed attained by the object
The ball strikes the floor at a speed of 7.8 m/s. Illustrate what was the initial speed of the ball? Assume that air resistance is negligible.
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