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The nucleus of an atom has a radius of about 7.9Ã-10-15 m. The electron is normally at a distance of about 3.4Ã-10-11 m from the nucleus. Assuming the atom is a sphere with a radius of 3.4Ã-10-11 m, find the volume of the atom, Find the volume of the nucleus, and Find the percentage of the volume of the atom that is occupied by the nucleus.
Light is shining perpendicularly on the surface of the earth with an intensity of 131 W/m2. determine the number of photons per second per square meter that reach the earth
A When the magnetic flux through a single loop of wire increases by 30 Webers, a current of 40.0 A is induced in the wire. over what time did the flux change
Young's modulus of nylon is 3.7 × 109 N/m2. A force of 6.0 × 105 N is applied to a 1.5-m length of nylon of cross sectional area 0.25 m squared
the horizontal and the chair slides along the floor. Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
Elements that appear in the same column of the periodic table often share similar chemical properties. In the case of the alkaline earth metals, calculate the path radius of the Ca ion
What is the reactance of a 8.2×10?2?F capacitor connected to a 19kV (rms), 540Hz line? Determine the frequency and the peak value of the current
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. find the coefficient of kinetic friction between the sled and the trail
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
A 15 g rifle bullet traveling 205 m/s buries itself in a 3.4 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
the coefficient of static friction is 0.26. If you apply the minimum force needed to get the refrigerator to move, illustrate what will the acceleration then be?
a ball is launched with a velocity of magnitude 7.00 m/s, at an angle of 40.0° to the horizontal. find the angle of its displacement from the launch point
You measure the length of a distant car to be subtended by an angular distance of 1.0 degrees. approximately how far away is the car
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