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Two Arctic explorers are pulling a supply sled with a total mass of 160 kg. Alphonse pulls the sled with a force of 50.0 N [E 25° N], while Bela pulls the sled with a force of 80.0 N [E 20.0° S]. Determine the acceleration of the sled.
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What is the maximum speed of the needle? ((answer: 20.3 cm/s))
calculate the ratio of earths rotational kinetic energy due to its rotation around its axis and the translational
The now-discontinued Concorde flew at Mach 1.3, which meant the speed of the plane was 1.3 times the speed of sound in air. What is the angle among the direction of propagation of the shockwave and the direction of the plane's velocity?
Calculate the rate at which the tank is filled in gallons per second. Calculate the rate at which the tank is filled in cubic meters per second. Determine the time interval, in hours, required to fill a 1.00-m3 volume at the same rate.
An object is placed 16.8 centimeter from a first converging lens of focal length 10.6 centimeter. Determine how far from the second lens is the image of first lens
Analysts were considering a study involving five factors each having two levels. How many conditions or "treatments" would make up such a study?
A 2.0 kg block is projected down a plane that makes an angle of 20.degree with the horizontal with an initial kinetic energy of 2.0 J. If the coefficient of kinetic friction between the block and plane is 0.40, how far will the block slide down along..
If an electric wire is allowed to produce a magnetic field no larger than that of the Earth (0.50 x 10-4 T) at a distance of 15 centimeter from the wire, obtain the maximum current the wire can carry
A curve of radius 60m is banked for a design speed of 100km/h.If the coefficient of static friction is .30 (wet pavement), at what range of speeds can a car safelymake the curve.
A person hums into the top of a well and finds that standing waves are established at frequencies of 10, 30, and 50 Hz. How deep is the well
a swimmer moves through the water at an average speed of 0.29 ms. the average drag force is 115 n. what average power
When a 290 g piece of iron at 182°C is placed in a 100 g aluminum calorimeter cup containing 250 g of glycerin at 12°C, What is the specific heat of glycerin
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