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Problem: A typical gamma ray emitted from a nucleus during radioactive decay may have energy of 170 keV.
A- What is its wavelength?
Show all work, use additional paper if necessary.
Find what force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 33.1 centimeter
A football is kicked across a level field. The ball spends 2.53 s in the air and lands 55.9 meter from the point where it was kicked. Find the speed of the ball at the top of its trajectory
At some point in its trajectory a ballistic missile (ICBM) of massm breaks into three fragments of mass m/3 each. Find the initial speeds of the latter two fragments in terms of v0
Three, and only three, bright fringes can be seen on either side of the central maximum when a grating is illuminated with light ( = 430 nm). What is the maximum number of lines/cm for the grating?
A 5.07-g bullet is shot through a1.06-kg wood block suspended on a string2.00 m long. The center of mass of the block rises a distance of0.47 cm. Find the speed of the bullet asit emerges from the block if its initial speed is 396 m/s.
You are a construction worker standing still on 12th Ave N in Fargo, and you watch a minivan drive past at 25 mi/hr eastward. how fast would you observe the rock to travel
You warm 1.85kg of water at a constant volume from 21.5C to 29.0C in a kettle. For the same amount of heat, how many kilograms of 21.5C air would you be able to warm to 29.0C? Make the simplifying assumption that air is 100% N2.
A tennis player swings her 1000 g racket with a speed of 8.00m/s . She hits a 60 g tennis ball that was approaching her at a speed of 13.0m/s, How fast is her racket moving immediately after the impact
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
An alpha particle (the nucleus of a helium atom, with charge +2e and a mass four times that of a proton) and an antiproton (which has the same mass as a proton but charge -e) are released from rest a great distance apart.
Find the direction of the net force exerted on the Sun. Give the direction relative to the line connecting the Sun and the Moon
A block of mass 5 kg hangs on a spring. When a second block with an identical mass of 5 kg is tied to the first, the spring stretches an additional ho = 1.5 m. What is the maximum speed attained by the remaining block
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