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Find the work done by the force?
A constant force F=<-1, 2, -5> acts on a particle as it moves from A(2, 4, 1) to B(-2, 1, 3). Find the work done by the force. I have trouble for finding the dot products.
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What was the ball's initial speed?
A spring gun at ground level fires a golf ball at an angle of 45 degrees. The ball lands 10 m away. a) What was the ball's initial speed? b) For the same initial speed, find the two firing...
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Light of wavelength 2400 x 10-10 m in air will become light of wavelength in glass (µ = 1.5) equal to
Light of wavelength 2400 x 10-10 m in air will become light of wavelength in glass (μ = 1.5) equal to A. 1600 x 10-10 m B. 7200 x 10-10 m C. 1080 x 10-10 m D. none of these
2. One of the geo-stationary satellites of India is vertically above A. New Delhi B. Mumbai C. Allahabad D. None of these
2. One of the geo-stationary satellites of India is vertically above A. New Delhi B. Mumbai C. Allahabad D. None of these
A 6.1kg bowling ball and a 7.2kg bowling ball rest on a rack 0.75 m apart. What is the force of gravity exerted on each of the balls by the other ball? G= Univ
A 6.1kg bowling ball and a 7.2kg bowling ball rest on a rack 0.75 m apart. What is the force of gravity exerted on each of the balls by the other ball? G= Universal Gravitational constant = 6.67...
Physics Problem
A 15-g CD with a radius of 7.5 cm rotates with an angular speed of 40 rad/s. What is its kinetic energy?
Physics problem
A child pedals a tricycle, giving the driging wheel an angular speed of 0.375 rev/s. if the radius of the wheel is 0.275 m, what is the child's linear speed?
Physics questions
If the angular speed of the Earth as it spins about, its axis is 7.27 x 10-5rad/s. How many rotations the Earth can make in 24 hours?
physics question
During a rescue operation, a 6000-kg helicopter hovers above a fixed point. The helicopter blades send air downward with a speed of 65 m/s. What mass of air must pass through the blades every second...
Physics question
Suppose the two speeds of a two canoes after they are pushed apart are 0.60 m/s for canoe 1 and 0.45 m/s for canoe 2. if the mass of canoe 1 is 350kg, what is the mass of canoe 2?
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Can anyone help me with these science questions on Astronomy: Earth and Space Systems/ The Solar System?
Most of the frozen ice in a comet's ______ vaporizes after the comet's many trips around the sun. The Sun produces energy by fusing hydrogen atoms, into _____ atoms in its core. Planets...
physcis question
Two blocks, each of mass m, are connected on a frictionless horizontal table by a spring of force constant k and equilibrium length L. Find the maximum and minimum separation between the two blocks...
Physcis question
Catching a wave, 77-kg surfer starts with a speed of 1.3 m/s, drops a height of 1.65m, and ends with a speed of 8.2 m/s. How much non conservative work was done on the suffer?
whats the color of the sky?
My friend and i were making a bet to see what is the color of the sky, his parents said they don't know. Neither do mine, so we are trying know,whats the color of the sky
In Physics, how do I go from a velocity vs. time graph to a position vs. time graph?
I have the velocity vs. time graph already, I just need to change it to position vs. time.
Physics Question
A 1.2KG block is held against a spring of force constant 1.0x104N/m, copressing it a distance of 0.15m. How fast is the block moving after it is released and the spring pushes it away?
Physics Questions
A 0.14kg pinecone falls 16m to the ground, where it lands with a speed of 13m/s. With what speed would the pinecone have landed if there had been no air resistance?
