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Question: A properly exposed photograph is taken at f/11 and 1/100s. What lens opening is required if the shutter speed is 1/400s?
Explain each step for the above question.
If you weigh 670 on the earth, illustrate what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 19.0?
Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of600 V exists between the plates. What is the magnitude of the electric field strength between the plates?
A large man stands 1kilometer away. Calculate the angle subtend by the man and calculate the subtended angle of the image
A girl delivering newspapers covers her route by traveling 4.00 blocks west, 4.00 blocks north, and then 6.00 blocks east. What is the total distance she travels
a cannon barrel is elevated at an angle of 45deg. it fires a ball with a speed of 346 ms. for the following questions
A 400 kg piano is being lowered into position by a crane while two people steady it by ropes pulling to the sides. Bob's rope pulls to the left, 15 degree below horizontal, by 380 N of tension. Ellen's rope pulls toward the right, 25 degree below hor..
A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. What is the rate of heat loss by radiation from the stove
A positron moving in the positive x-direction at 2 * 10^8 m/s collides with an electron at rest. The positron and electron annihilate, producing two gamma-ray photons. Photon 1 travels in the positive x-direction and photon 2 travels in the negative ..
According to Equation 20.7, an ac voltage V is given as a function of time t by V = V0sin(2?f t), what is the smallest value of the time at which the voltage equals two-thirds of the peak value
the temperature in an electric oven is 192 degc. the temperature at the outer surface in the kitchen is 35.1 degc. the
When she tightens the string slightly, she hears 6 beats/s. What is the frequency of string now.
A Carnot engine has 40 g of helium gas as its working substance. It operates between two reservoirs of temperatures T1 = 400°C and T2 = 60°C. find the work generated by this engine during one cycle
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