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A block with mass m has a coefficient of kinetic friction Mk with the floor. If the block is obeying Newton's 1st law while being pushed at angle 0 (theta), show that the power needed to push it at velocity v is given by P=Mkv(mg+fsin0)
One of the many isotopes used in cancer treatment is 79198Au, with a half-life of 2.70 d. Determine the mass of this isotope that is required to give an activity of 230 Ci
A string 0.5 m long with mass density 0.0003 kg/m and is vibrating 200 cycles per second. What hanging mass would produce this tension
A radar installation used for monitoring thunderstorms emits radio waves at a frequency of 2750MHz. By what amount does the frequency differ from 2750MHz
The air inside a hot air balloon has an average temperature of 79.2 degrees celcius. The outside air temperature is 20.3 degrees Celsius. What is the ration of the density of air inside the balloon to the air in the surrounding atmosphere?
Suppose you pour water into a container until it reaches a depth of 44.6 cm. What is the pressure at the bottom of the container
Suppose one gallon of gasoline produces 1.09×108 J of energy, and this energy is sufficient to operate a car for 21.7 miles. how many miles could the car go on a single tablet
man hanging upside down is holding a partner who weighs 604 N. what force must the man apply to his partner in the straight-down position
A moving 4.50 kg block collides with a horizontal spring whose spring constant is 343 N/m. find the work done by the spring in bringing the block to rest
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
Derive the equation for the linear acceleration of a falling mass m suspended by a string from the rim of a uniform disk of mass M and radius R that is free to rotate without friction about its principal axis. 2. If the hanging mass is doubled, what ..
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 4.622 g, is pressed into a leaf of 3.941 µm thickness, what is the area ..
What is the value of g at the location of this satellite. Discover the altitude of the satellite in meters.
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