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Box 1 is located on an incline surface with μk = 0.3. It is connected to box 2 with a rope over a massless and frictionless pulley. If m1 = 10kg, m2 = 50kg and α = 450. Find (a) acceleration of each box, (b) tension in the rope.
How can we predict a change in climate 100 years from now if we cannot forecast a rain-storm more than 10 days out?
The scale of a spring balance reading from 0 to 235rm {N} has a length of 15 rm{cm}. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.7rm {Hz}. What is the mass of fish? In Kg.
What is the gravitational force between two 20 kg iron balls separated by a distance of 0.5m? The gravitational constant is G = 6.67×10^-11 N-m^2/kg^2
A bicycle wheel, 65 cm across, is half buried in dirt, standing on edge. What was the beetle's average velocity and speed from the time it started climbing until it hit the ground
Minority students in engineering. Figure 11.11 is a histogram of the number of minority students (black, Hispanic, Native American) who earned doctorate degrees in engineering from each of 152 universities in the years 2000 through 2002.
Two 3.0 g spheres are suspended by 11.0 cm long light strings. A uniform electric field is applied in the x direction. determine the electric field intensity that enables the spheres to be in equilibrium at ? = 9°
An 870-kg race car can drive around an unbanked turn at a maximum speed of 45 m/s without slipping. The turn has a radius of 170 m. What is the coefficient of static friction between the track and the car's tires
a. Determine his time of flight (his "hang time"). b. Determine his horizontal velocity at the instant of takeoff.
After falling from a rest from a height of 30 m, a 0.50-kg ball rebounds upward, reaching a height of 20 m. If the contact among ball and ground lasted 2.0 ms, what average force was exerted on the ball?
A roller coaster is traveling along a vertical circular loop, How much work is done by the frictional force from Position 1 to Position 2
A high school kicker makes a 34.0yd field goal attempt (in American football) and hits the crossbar at a height of 12.0ft. What is the magnitude of the net displacement of the football from the time it leaves the ground until it hits the crossbar? Wh..
the near and far points of a person are at 40cm and 250cm respectively. find the power of the lens heshe shoeld use
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