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A diver springs upward from a board that is 5 meters above the the water. At the instant she contacts the water her speed is 12 m/s and her body makes angle of 70 degrees with respect the horizontal surface of the water. Determine
a) Her time in air
b) Her initial speed as she leaves the board
c) her peak height measured above the water
d) Her horizontal distance from the divining board?
The armature windings of a dc motor have a resistance of7.5? . The motor is connected to a 120-V line, What will be the current in the motor
What is the de Broglie wavelength of a neutron that has fallen 0.80m in a vacuum chamber, starting from rest
Suppose 12.5 g of oxygen (O2, 32.0 g/mol) is heated at constant atmospheric pressure from 19.0°C to 100°C. How many moles of oxygen are present
A person has a near point of NP = 85 cm and a far point of FP = 210 cm. Write a formula for the power, P1, of the upper portion of the bifocals, in terms of the given quantities, that will enable the person to see distant objects clearly
A student sees a newspaper ad for an apartment that has 1630 square feet (ft2) of floor space. How many square meters of area are there
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
In outer space, there are two planets that are separated by a distance of 345x10^8 km. These two planets have the extact same mass. What is the mass of each star when it takes 8.9 earth years to complete one orbit
Two blocks of masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find a relation between the variables that would guarantee that the block is initially slowing down
Assuming that a light bulb acts as a point source emitting the light isotropically at 100W. What is the root-mean-square value of the electric field at distance d=20m from the bulb
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo which is greater than the terminal speed Vterm. Describe and explain how the velocity varies with time, and make a plot of Vy against t for t..
the plane of a flat, circular loop of wire is vertical. An external B-field is directed perpendicular to the plane of the loop. What is the direction of the external magnetic field
A student from Sidney, Australia compares the distance he obtained from the 1-st spark mark to the 20-th spark mark, What difference in the results was found
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