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A person of mass M lies on the floor doing leg raises. His leg is 0.85m long and pivots at the hip, How far does the entire body's center of mass rise
A point charge is outside of a spherical surface and no charge is enclosed by that surface, What is the flux through the entire closed surface
A 2.60kg box that is several hundred meters above the surface of the earth is suspended from the end of a short vertical rope of negligible mass, At what value of t does the box return to its initia
Closed gaussian surfuce in the shape of a cube of edge length 2.00 m, with one corner at x=5.00m, y=4.00m, what is the net charge contained by the cube
A motorcycle has a constant speed of 25.0 m/s as it passes over the top of a hill whose radius of curvature is 118 m, Find the centripetal force that acts on the cycle
Compute the change in temperature when 2 g of sodium chloride is dissolved in 270.0 mL of water initially at 25 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.
A gas expands against a constant external pressure of 2.1 bar until its volume has increased from 4.8 L to 7.9 L. During this process it absorbs 590.0 J of heat from the surroundings. Calculate the
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires, what speed must the driver slow the car
Suppose 28.3 g of ClF3(g) and 24.4 g of Li(s) are mixed and allowed to react at atmospheric pressure and 25 C until one of the reactants is used up, producing LiCl(s) and LiF(s). Using the NIST valu
A speed skater goes around a turn that has a radius of 36 m. The skater has a speed of 12 m/s and experiences a centripetal force of 461 N
produces an alcohol isomeric to one obtained by hydroboration-oxidation of the same alkene. Reduction of the alkene affords the compound C5H12, while ozonolysis yields an aldehyde, CH3CHO, as one of
A cylindrical air tank has dimensions diameter = 0.2m and height 0.8m, Calculate the mass of air in the tank (kg) (have to use ideal gas law, molecular weight of air)
When 16 mL of water at 19 C is combined with 15 mL of water at 59 C, what is the final temperature of the water?. The specific heat of water is 4.184 J/g/K and its density is 1.0 g/mL.
A column of soldiers, marching at 141 paces per minute, keep in step with the beat of a drummer at the head of the column, What is the approximate length of the column
The pressure in a traveling sound wave is given by the following equation. p = (2.1 Pa) sin ?[(1.40 m-1)x - (280 s-1)t], Find the pressure amplitude and Find the wavelength
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
A 22.5 g bullet is fired from a rifle. It takes 2.60 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
A particle of charge +9.2 ?C is released from rest at the point x = 55 cm on an x axis, What is the kinetic energy of the particle at the instant it has moved 12 cm if Q = +61
A 17.00 kg block is pushed up a frictionless inclined plane that makes an angle of ? = 33 o with the horizontal direction. What force is needed to move the block with constant speed
An ambulance with a siren emitting a whine at 1200 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s, How fast is the ambulance moving
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
A 7.01- g bullet is moving at 563.00 m/s as it leaves the 0.58- m-long barrel of a rifle. What is the average force on the bullet as it moves down the barrel
2 stationary positive point charges, charge 1 of magnitude 3.20nC and charge 2 of magnitude 1.60nC, What is the speed Vfinal of the electron when it is 10.0cm from charge 1
A 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s