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A 1.0 kg wood block is pressed against a vertical wood wall by a 12 N force at 30 degrees above the negative x-axis. If the block is initially at rest, will it move upward, move downward, or stay at rest? (Friction is present) the coefficient of the static friction is 0.5
A transverse wave on a string is described by the wave function y = A0sin(kx + ωt) where A0 = 0.425m, k = 0.895rad/m, Calculate the transverse speed of the element
A ball thrown straight upward returns to its original level in 2.40. What is the initial speed of the second ball if it also returns to its original level in 2.40
A cyclotron operates with a given magnetic field and at agiven frequency. If R denotes the radius of the final orbit, the final particle energy is proportional to 1/R. A cyclotron operates with a given magnetic field and at agiven frequency. If R ..
a sound wave travels twice as far in neon ne as it does in krypton kr in the same time interval. both neon and krypton
The motor of a ski boat produces a power of 38000 W to maintain aconstant speed of 15.3 m/s. What is the tension in the rope pulling the skier
A 2.0 kg pendulum bob on a string 1.5m long is released with a velocity of 0.0 m/s when the support string makes an angle of 60 degrees with the vertical. What is the tension in the string at the bottom of the swing?
The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)?1. If a 48.5-gal steel container is filled completely with carbon tetrachloride when the temperature is 10°C, how much will spill over when the temperature rises t..
In a head-on collision, a car stops in 0.17s from a speed of 30m/s . The driver has a mass of 78kg, What force is applied to the driver by his seat belt during that fraction of a second
A cube of iron 4cm on a side is floated in a bath of mercury. The density of iron is 7.87 g/cm^3. What percent of the cubes mass is located below the surface of the mercury?
When an ambulance is stationary, the siren gives off a sound at a frequency of 500 Hz. What is the frequency of the stationary siren as perceived by an observer
Your toaster has a power cord with a resistance of 2.2×10?2 connected in series with a 9.9 nichrome heating element. How much power is dissipated in the power cord
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skate..
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