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What is the average velocity (Vrms) of 0.75kg of air at room temperature (20°C)?
What is the average kinetic energy of air at 20°C, using the velocity you just calculated?
While rearranging a dorm room, a student does 292J of work in moving a desk 3.90m. What was the magnitude of applied horizontal force.
A person with a mass of 71.6 kg and a volume of 0.089 m3 floats quietly in water. (a) What is the volume of the person that is above the water? If an upward force F is applied to the person, the volume of the person above the water increases by 0...
Illustrate what angular speed must such a cylinder have so that the centripital acceleration at its surface equals the free-fall acceleration on Earth?
Three blocks, each of mass 12 kg are on the frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 1.1 m/s2. What is the net horizontal force on b..
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
A wheel moves forward for 2 seconds making two complete revolutions. The wheel rotates during an arc length of 8.2 meters.
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Find the volume of the cylinder. Calculate the probable percent error in the length. Calculate the probable percent error..
Find out the change in entropy of the system
In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, which they each maintain for the rest of the race.
how long does it take to reach the new equilibrium position.
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer .
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