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A solid conducting sphere with an area of 16 m 2 has a total charge of 4 μC. Determine the electric field through the Gaussian surface.
What is the electric flux passing through a Gaussian surface that contains 2 protons and 1 electron?
An electron is accelerated from rest through a potential difference 12 V. What is the change in electric potential energy of the electron? Explain your answer.
if a child pours 210ml juice in a glass and then drinks one seventh of it, after which he adds another 30% of what is left in the glass to it, how much juice is in the glass
A cubic wood box with a length, L = 0.3 m and mass = 300 kg is held with a
string in an open beaker of an unknown liquid with density = 1110 kg/m3
.
Assume that the atmospheric pressure is 1.00 atm
Determine,
i. the downward force
ii. the upward force
iii. the tension in the string
iv. the buoyant force of the cubic wood box. Identify the relations of these
types of forces
A submarine has been damaged from an explosion at the depth of 250 m
below the surface. A man tries to escape from the submarine by using a pop-
out hatch, which is 1.8 m by 0.9 m in size. Determine the value of the force
needed for the man to push out at 250 m depth below the surface.
(Density of sea water = 1024 kg/m3, internal air pressure = 1.00 atm)
A car driver drives to the north on a straight two-lane road at a constant
speed of 80 km/h. A truck driver traveling to the south at a constant speed
of 100 km/h approaches the first car (in the other lane).
i) What is the truck velocity relative to the car?
ii) What is the car velocity relative to the truck?
iii)Do the relative velocities change after the truck and the car passed each
other? Why?
1. Calculate the electric potential of q1 = 25.0nC at (a) 1.00m, (b) 2.00m, and (c) infinite long distance from it.
2. Calculate the potential energy that another charge q2 = 5.00nC possess when placed at the three different points of the previous example.
A metal wire 75.0 cm long and 0.130 cm in diameter stretches 0.0350 cm when a load of 8.00 kg is hung on its end. Find the stress, the strain, and the Young’s modulus for the material of the wire.
Suppose that a person throws a ball upward at 15 m/s while standing on the edge of a cliff so that the ball can fall to the base of the cliff 50 m below.
a) How long does it take the ball to reach the base of the cliff?
b) What is the total distance covered by the ball.
#339914 on Dec 2023