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The average density of a fish can be found by firstweighing it in air and then finding the apparent weight of the fishas it hangs completely immersed in water. If a fish has weight233.2 N and apparent weight20.3 N in water, what is the average density of the fish?
kg/m3
The 73 kg student balances an 1100 kg elephant on a hydraulic lift. Inside the lift is filled with oil and the diameter of the piston the elephant is standing on is 2.0 m, What is the second student's mass
A meteor that falls to earth from a great distance has a speed of 11 km/s. In class we found that the temperature of an iron meteor is 290,000K. We assumed all of the energy heats the meteor and none of it is transferred to the surroundings.
The mass of an electron is 9.11*10^-31kg. What is the mass of one negative coulomb electron
Two equal point charges repel each other with a force of 5.25 N. If they are separated by 4.0 cm, what is the magnitude of each charge
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
a sinusoidal transverse wave moves along a stretched string in the +j direction with amplitude 5 cm, wavelength 2 m, and wave speed 200 m/s. How much average power is transmitted along the string
A classroom window made of glass is 1cm thick. The window is 2m square . If the thermal conductivity of glass k = 0.96 w/(mK) and the temperature is 21C inside and 32C outside, find the head flux and the temperature distribution along the thicknes..
What is the frequency of light that has the wavelength in water of 788 nm if the refractive index for this light is 1.33.
Two comets, each of mass 6500 kg and traveling 87 m/s in opposite directions, collide head-on and come to rest. How much energy is produced in this collision
For nitrogen gas at 35 C calculate the vrms, the vp and the translational kinetic energy
question1a 380 kg piano slides 3.9m down a 27 degree incline and is kept from accelerating by a man who is pushing back
A 1200-kg car rolling on a horizontal surface has speed = 60 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2m . What is the spring stiffness constant of the spring? in N/m
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