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A 63 kilogram sprinter, starting from rest, runs 41 meter in 7 second at constant acceleration.
1) Find the magnitude of the horizontal force acting on sprinter?
2) Find the sprinter power output at 2.0 s, 4.0 s, and 6.0 s?
Some particle of mass m is constrained to move on the surface of a vertical cylinder defined by 2 2 2 x ? y ? R , where R is the radius of the cylinder. The particle is subject to a force directed towards the origin and proportional to the distanc..
There are two resistors, R1 and R2, connected in series with an ideal battery. What are the actual voltages across the resistors
If a block of wood floating on a pool of water has a volume of 37 cm3 and displaces a volume of water of 30 cm3, what is the density of the wood
A 250g ice cube at -10?C is placed in an aluminum cup whose initial temperature is 70?C. The system comes to an equilibrium temperature of 20?C
A vertical solid-steel post 26.0 cm in diameter and 2.53 m long is required to support a load of 8200 kg. You may ignore the weight of the post. What is the strain in the post and the change in the posts' length when the load is applied?
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Find the speed of the gasoline as it leaves the hose
two equal resistances are connected in the gaps of a meter bridge. if the resistance in the left gap is increased by 10
Five 5 ohms resistors are connected in series with a 15 Volt battery. Determine the equivalent resistance of the circuit
a large reel of paper installed at the end of a paper machine. d1 2m j 1000kgm2 n1 60rpm tension on paper 1000n.
You are given a spherical mirror and wish to estimate its properties. Compute what the mirrors radius of curvature
Some bacteria are propelled by biologicalmotors that spin hair-like flagella. A typical bacterial motorturning at a constant angular velocity has a radiusof 1.36 x10-8m, and a tangential speed at the rimof 2.21 x 10-5m/s.
A plastic bag is filled with hydrogen at atmospheric pressure and 23.0 oC. what is the required volume of the balloon if the air inside can be maintained at 43.0 oC
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