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Jack was exposed to fast neutrons; he received a radiation dose of 180 rem on part of his hand, affecting 24.0 g of tissue. The relative biological effectiveness (RBE) of these neutrons is 12.0.
What was the total energy of the radiation Jack received? (Joules)
A 62 driver gets into an empty taptap to start the day's work. The springs compress 1.5×10?2 . What is the effective spring constant of the spring system in the taptap
An underwater camera has a lens of focal length 35.0 mm and a maximum aperture of f/2.80 . The film it uses has an emulsion that is sensitive to light of frequency 6.00×10^14 Hz. If the photographer takes a picture of an object 2.80 m in front of ..
A bullet of mass mb is fired horizontally with speed v1 at a wooden block of mass mw resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest within the block, the bloc..
Suppose an astronomical telescope is being designed to have an angular magnification of 31.6. If the focal length of the objective lens being used is 84.5 cm, Find the required focal length of the eyepiece
Camera lenses are described in terms of their focal length. A 50 mm lens has a focal length of 50 mm, Locate the position of the image
A block of mass 2.50 kg is pushed 2.40 m along a frictionless horizontal table by a constant 16.0 N force directed 25.0° below the horizontal. Determine the work done by the force of gravity
Theradius changes from 10.0 cm to 20.0 cm in a time of 8.0 s.The magnetic field is 3.0 T. The loop has a resistance of 5.0 ohms. what is thevalue of the current while the radius is changing
A light meter stick is balanced at the 60 cm mark with a 200-g mass is hung from the 90 cm mark and a 100-g mass is hung from the 10 cm mark, Find the mass (in g) of the ruler
A bat moving with a speed of 3.15{\rm m/s} and emitting sound of 39.0{\rm kHz}, What frequency is heard by the moth
A baseball is thrown with an initial velocity of 20 m/s along the horizontal axis and 15 m/s along the vertical axis. The ball soon reaches the highest point, what is the speed at the point? (ignore air friction) Can you give me an explanation as to ..
An 80 g, 35 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 g ball of clay travelling horizontally at 2.50 m/s hits and sticks to the very bottom tip of the rod.
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
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