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Calculate the temperature rise. The heat capacity of 1 mol water( which weighs 0.018 kg) is 80 J/K. The acceleration due to gravity is 9.8 m/s^2.
Develop an expression for the quantity of liquid flowing over a sharp-edge V-notch of total angle 2θ, in terms of the head H above the bottom of the notch.
A random sample of 42 college graduates revealed that they worked an average of 5.5 years on the job before being promoted. The population standard deviation was 1.1 years. Using the 0.99 degree of
A wrench 0.3 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of langle 0, 1, 2rangle at the end of the wrench. Find the magnitude of
A pair of oppositely charged parallel plates are separated by a distance of 5.0 cm with a potential difference of 550 V between the plates. A proton is released from rest at the positive plate at th
A plate carries a charge of -3.0 micro Coulomb and a rod of +2.0 microC. How many electrons must be transferred from the plate to the rod so that both objects have the same charge?
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y'(x,t) = (3.0 mm) sin (20x -4.0 t + 0.820 rad), with x in meters and t in seco
Two point charges 2.40 and 6.50are 0.100 apart. Point is midway between them; point is 8.00×10-2 from and 6.00×10-2 from . Take the electric potential to be zero at infinity. Find the w
A long wire lying along the x-axis carries a current of 2.60 A in the +x direction. There is a uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors
Two children ride on the merry-go-round shown in Conceptual Checkpoint 10-1 and the figure below. Child 1 is 2.0 m from the axis of rotation, and child 2 is 1.5 m from the axis. The merry-go-round
A charge of -3.35 nC and a charge of -7.00 nC are separated by a distance of 40.0 cm. Find the position at which a third charge of +7.10 nC can be placed so that the net electrostatic force on it i
A student stands at the edge of a cliff and throws stone horizontly over the edge with speed of 18m/s.The cliff is 50m above a flat horizontal beach.How long after being relased does the stone stri
A layer of transparent plastic (n = 1.60) on glass (n = 1.52) looks dark when viewed in reflected light whose wavelength is 588 nm in vacuum. Find the two smallest possible nonzero values for the t
A sound source emits sounds of frequency 190 Hz that travel through still air at 340 m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is the wavelength of t
Someone in a car going past you at the speed of 49 meters per second drops a small rock from a height of 2.2 meters. Acceleration due to gravity 9.8 meters per second squared. How far from the point
What will the attractive force be if the vacuum is replaced with water at 20o C? The permittivity of water at this temperature is 7.07x10-10 C2/N-m2.
A playground merry go round of a diameter 6.00 m and mass 240 kg is rotating at 12.0 rev/min about a frctionless vertical axle. Facing the axle, a 30.0 kg child hops on to the merry go round and ma
In a period of 6.00 s, 6.00 × 1023 oxygen molecules strike a wall with an area of 2.00 cm2. If the molecules move with a speed of 400.0 m/s and strike the wall head-on in elastic collisions, w
Find the required angular speed of an ultracentrifuge for the radial acceleration of a point 2.40 from the axis to equal 5.00×105 g (where g is the acceleration due to gravity).
Finally sphere W is touched to sphere C (with an initial charge of +60e), and then they are separated. The final charge on sphere W is +23e. If the initial charge on sphere A was ce, what is the val
A 24.0 L cylinder containing helium gas at a pressure of 46.5 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. What is the final pressure (in atm) in the cylin
A steel ball of mass 0.50 Kg is fastened to a cord 70 cm long and is released when the cord is horizontal. At the bottom of its path the ball strikes a 2.5 Kg steel block initially at rest on a fri
The electrons enter through a small hole in the negative plate, accelerate, then exit through a small hole in the positive plate. Assume that the holes are small enough not to affect the electric f
You drive at that speed for the first 100 km, but then construction work forces you to slow to 45 km/h for 40 km. What would be the least speed needed for the rest of the trip to arrive in time for
What is the size of the smallest vertical plane mirror in which a 10.0 tall giraffe standing erect can see her full-length image? (Hint: Locate the image by drawing a number of rays from the giraffe