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A viewing window in the Atlanta aquarium is 69 inches wide and 41 inches high. If the average pressure of the water inside the tank is 17.3 psi, what is the outward force on the window?
A juniper wood plank measuring 8 ft by 0.6 ft by 0.1 ft is totally immersed in water. What is the net force acting on the plank?
A circular loop (area = 0.2 m^2) turns in a uniform magnetic field with B=0.13 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is (pi) rads and is
The two corners nearer to P have charges +5Q and -4Q, respectively. Assuming that the potential V = 0 at a great distance, what is the potential (in volts) at point P?
This nuclide is produced by the endoergic reaction 16^O(n,p)16^N. What is the minimum energy of the neutron needed to produce 16^N?
To what temperature (in degrees Celsius) must the aluminum alloy cathode be cooled? The expansion coefficient of the aluminum alloy is 2.4E-5.
A platinum sphere with radius 0.0109 m is totally immersed in mercury. Find the weight of the sphere, the bouyant force acting on the sphere, and the sphere's apparent weight. The densities of plati
It has been suggested these warm and cold waters could be the heat reservoirs for a heat engine, allowing us to do work or generate electricity from the thermal energy of the ocean. What is the maxi
Calculate the force P down the slope that will keep the block at (a) constant velocity down the slope (b) acceleration of 2 m/s^2 down the slope.
A 2.17 kg particle has the xy coordinates (-1.36 m, 0.792 m), and a 2.34 kg particle has the xy coordinates (0.487 m, -0.102 m). Both lie on a horizontal plane. At what (a)x and (b)y coordinates mus
The ball lands in a hoop which is 3m high from the ground and 8m away. What is the speed Vo? What is the velocity of the ball before it goes into the hoop-give Vx nad Vy or V and theta.
A microscope for viewing blood cells has an objective with a focal length of 0.50 cm and an eyepiece with a focal length of 2.5 cm. The distance between the objective and eyepiece is 14.0 cm.
Consider the human eye to be composed of a thin lens of uniform index of refraction n = 1.43, with fluid of n = 1 inside, with the light-receptive cells a distance 24.6mm from the lens. The eye can
The force magnitude varies in time as F= 0.50t + 0.30t2, where F is in newtons and t in seconds. The pulley is initially at rest.(a) At t = 6.0 s what is its angular acceleration?
What is the force with which the air outside the house pushes the roof downward? (again, calculate this value to 5 significant digits)
A mass m1 = 3.1 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4 kg which hangs freely from the string. When released, the hanging m
A proton is placed at rest near the positive side of two oppositely charged, parallel plates. There is a potential difference of 12 V. Calculate the amount of work done on the proton and the final s
A geologist finds that a Moon rock whose mass is 9.79 kg has an apparent mass of 6.50 kg when submerged in water. What is the density of the rock?
A wire 1.80 m long carries a current of 13.0 A and makes an angle of 35.0 degrees with a uniform magnetic field of magnitude B = 1.50 T. Calculate the magnetic force on the wire.
A proton moving with a velocity of 4.0×104 m/s enters a magnetic field of 0.20 T. If the angle between the velocity of the proton and the direction of the magnetic field is 60°, what is th
(a) Calculate the apparent distance between the fish and the front wall. (b) Calculate the apparent distance between the image of the fish and the front wall.
If a blood cell subtends an angle of 2.1 multiplied by 10-5 rad when viewed with the naked eye at a near point of 27.0 cm, what angle (magnitude only) does it subtend when viewed through the microsc
How far from the center of the earth is the center of gravity of the earth-moon system? (Note: the radius of the earth is 6400km)