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The left ventricle of the heart accelerates blood from rest to a velocity of + 20.8 cm/s. How much time does blood take to reach its final velocity
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
The Youngs Modulus for copper is 130 Gpa. What is the strain in the the copper wire under a stress of 120Mpa
A projectile is fired in such a way that its horizontal range is equal to 14 times its maximum height. What is the angle of projection
An alien race has evolved such that their eyes work exactly like ours except their eyes can be modeled with a biconcave lens. WHen they come to visit us, what kind of glasses would you prescribe
a projectile of mass 0.212kg is shot from a cannon. The end of the cannon barrel is at height 6.4m, the initial velocity of the projectile is 9.3m/s. How long does it take the projectile to hit the
A polonium nucleus, while at rest, decays into a lead nucleus of rest mass 342.1126 x 10^-27 kg, and emits a helium nucleus of rest mass 6.6483 x 10^-27 kg. Determine the rest mass of the Polonium n
Batteries are recharged by connecting them to a power supply (i.e., another battery) of greater emf in such a way that the current flows into the positive terminal of the battery being recharged
The gun on a battleship is at the surface of the water, and fires a 500 kg projectile with a muzzle velocity of 400 m/sec, What is the maximum range
an irregular object is suspended by a wire from its center. when a torque of .14 N.m is applied, to the object, find the inertia of the object
If I short out a D cell and draw a current of 0.5 A for a minute, how many coulombs of charge move through the circuit
Copper has an electrical resistivity %u03C1 = 1.72 x 10-8 %u2126m. What is the electrical resistance of a copper wire
An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. How fast is it going when the nose leaves the st
A fictional spaceship accelerates at a constant rate of 0.107 m/s2. What would be its final velocity
A submarine dives to a depth of 310 feet in the ocean. What is the gauge pressure at this depth? How many atmospheres is this
A certain speed boat weighs 5,880 N. It can accelerate from 0 to 40 m/s in 5 seconds. (Need to see the math). How large is the net force acting on the boat
A 60 kg car moving towards the right at 5 m/s collides head on with an 50 kg car moving towards the left at 6 m/s, find the velocity of the combined bodies
When a woman who is 2 m tall stands near a flagpole, the shadow of her head and the shadow of the top of the flagpole are superimposed, Find the height of the flagpole
A cell membrane has a surface area of 1.0 x 10^-7 m^2, a dielectric constant of 5.6 and a thickness of 8.5 nm. How much energy is stored in this capacitor
Two parallel plates are 6.0 cm apart. The bottom plate is charged positively and the top plate is charged negatively, What is the time required for an electron
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
What is the crankshaft's angular acceleration, How many revolutions does it make while reaching 3600{\rm rpm}
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.60 m/s2 over a distance of 19.4 cm. Find the total time the block is in motion
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
A movie projector is equipped with a 0.6-meter focal length lens that is positioned 0.605 meters from the film. How many times larger is the image than the object