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Problem: An erupting volcano violently projects a boulder from a vent at an angle of 40 degrees relative to the horizontal. The ejection point is 2.5km above the horizontal, and the landing point is 6.0km along the horizontal.
Part A: What was the magnitude of its initial velocity?
I need help to find what the magnitude of its initial velocity.
The near point of a naked eye is 30 cm. When an object is placed at the near point and viewed by the naked eye, it has an angular size of 0.062 rad. A magnifying glass has a focal length of 17 cm, and is held next to the eye.
An object is 100 cm in front of a concave mirror that has a radius of 80 cm. Calculate the image distance and lateral magnification
A chamber with a fixed volume of 1.0 m 3 contains a monatomic gas at 3.00*10 2 K. The chamber is heated to a temperature of 6.00*10 2 K. This operation requires 20.0 J of heat. (Suppose all the energy is transferred to the gas.) How many gas m..
Assume that the blocks accelerate as shown with an acceleration of magnitude = 0.250 and that the coefficient of kinetic friction between block 2 and the plane is = 0.400. Find out the mass of block 2, , when = 30.0.
a dart is thrown horizontally with an initial speed of 17 ms toward point p the bulls-eye on a dart board. it hits at
A ball of mass m=0.5 kg and radius r=0.02m is pushed against a spring of force constant 200N/m, What is the speed of the rolling ball when it leaves the spring
The human ear canal is about 2.9 centimeter long. If it is regarded as a tube open at one end and closed at the eardrum, obtain what is the fundamental frequency around which we would expect hearing to be most sensitive
a spring is hanging vertically from a ceiling. assume the springs mass is negligible. i hang a 0.5kg mass on the spring
A skier of mass 71 kg is pulled up a slopeby a motor-driven cable. What power must a motor have to perform this task
A 5 kg block starts with an initial speed of 8 m/s up a ramp and comes to rest after 3s. The ramp is at a 30 degree angle. What is the coefficient of the kinetic friction
Red light of wavelength 665.9 nanometer produces photoelectrons from a certain material. Evaluate what is the material work function
Before embarking on a car trip from Michigan to Florida to escape the winter cold, you inflate the tires of your car to a manufacturer-suggested pressure of 32 psi while the outside temperature is 24 °F and then make sure your valve caps are airtight..
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