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A bathysphere used for deep-sea exploration has a radius of 1.51 m and a mass of 1.22 104 kg. To dive, this submarine takes on mass in the form of sea water. Determine the amount of mass that the submarine must take on if it is to descend at a constant speed of 1.00 m/s, when the resistive force on it is 1097 N in the upward direction. The density of seawater is 1.03 x 103 kg/m3.
A bat flies toward a moth at speed 8.15 m/s while the moth isflying toward the bat at speed 5.06 m/s. The bat emits a sound waveof 51.9 kHz. What is the frequency of the wave detected by the batafter it reflects off the moth?
A proton traveling to the right along the x-axis enters a region where there is a magnetic field of magnitude 3.7 T directed upward along the y-axis. The charge on a proton is 1.60×10?19. If the proton experiences a force of 3.6 × 10?12 N, find its s..
A 1.91-kg solid sphere (radius = 0.130 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is the translational and kinetic energy
A point charge with charge q1 is held stationary at the origin. A second point charge q2 with charge moves from the point (x1, 0) to the point (x2,y2 ). How much work is done by the electrostatic force on the moving point charge? Express your answ..
developing a more realistic model the bioengineer models the acceleration of the snow petrl by an equation of the form
A wire carries current to the north (towards the top of the computer screen) through a magnetic field. what is the direction of the magnetic force on the current-carrying wire
A transverse wave travels on a string of length 1.3 m and diameter 1.1 mm, What is the linear mass density of the string
an object is moving along a straight line and the uncertainty in its position is 1 m.a find the minimum uncertainty in
a certain region of space bounded by an imaginary closed surface contains no charge. is the electric field always zero
A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
A 45.0 kg girl is standing on a 159 kg plank. The plank, originally at rest, isfree to slide on a frozen lake, which is a flat, friction less surface. What is her velocity relative to the surface of ice
we know that when a projectile lands at the same level it was launched it will have a maximum range if the launch angle
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