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A man pushes a 10kg baby buggy up a 30degree incline at constant speed. He applies a force of 60N parallel to the slop of the incline. What is the coefficient between the buggy and incline?
When a force of 19.0 N is applied to a spring, it elongates 0.0858 m. find out the period of oscillation of a 4.0 kg object suspended from this spring.
A television screen is illuminated using a beam of electronstraveling at 7.50×106 m/s in a1.75×10−2 T magnetic field. If an electron ismoving in the positive x direction and the magnetic fieldis oriented 55.0° from the z axis in the firstquadrant of ..
The potential is constant throughout a given region of space. Is the electric field zero or nonzero in this region
A tennis player places a 40 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.052 kg tennis ball horizontally with a velocity of 30.6 m/s toward the north. What will be the final velocity of the machine.
During a thunderstorm the electric field at a certain point in the earth's atmosphere is 1.11 105 N/C, directed upward, Find the acceleration of a small piece of ice of mass1.08 10-4 g
After 2.00 days, the activity of a sample of an unknown type ofradioactive material has decreased to 84.2% of the initialactivity. What is the half-life of this material
suppose the specific heats of milk and coffe are the same as that of water, and neblect the specific heat of the container.
A superhero flies 287 meters from the top of a tall building at an angle of 17 degrees below the horizontal. What is the vertical component of the superhero's displacement? Answer in units of meters. The horizontal is 274.459 meters and the vertical ..
With a 1400 Mohm resistor across its terminals, the terminal voltage of a certain battery is 2.56V. Find the internal resistance of this battery
A spaceship approaching Earth at 0.70 c fires a particle beam toward Earth, with speed 0.76 c relative to the ship
While giving an injection with a hypodermic syringe, a nurseapplies a force of 3.95 N to the piston of a syringe. The pistonhas a circular cross section of radius 4.00 mm. What is the pressure increase in the fluid within the syringe?
assume a bar 2 m long expands 0.6 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
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