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A particle having a mass of 0.200 {rm g} carries a charge of -2.50×10-8 {rm C}. The particle is given an initial horizontal northward velocity of 4.00×104 {rm m}/{rm s} .What are the ma
A swimming pool of depth 10m is completely filled with water of density 1100kg/m2. Calculate the total pressure exerted at its bottom surface, if the atmospheric pressure is 1.013x105 Pa.
Two charges, and are a distance apart. These two charges are free to move but do not because there is a third charge nearbyWhat must be the magnitude of the third charge and its placement in order
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person weighing 120 pounds?
Use the dot product to find θ, the angle between force F and displacement d.
Think of an organization with which you are familiar. How has that organization's ethical policies changed as the result of external pressure? Provide examples.
The wire is made up of atoms with va- lence 2 and molecular mass 70 g/mole, where u = 1.6605 × 10-27 kg is the mass of a hydro- gen atom. Assume there is one conduction electron per atom. Wha
Two metal balls A and B of negligible radius are floating at rest on Space Station Freedom between two metal bulkheads, connected by a taut nonconducting thread of length 2.00 m.
Design a heater using nichrome wire which should get heated to 65 degree celcius on applying 12V. What should be the dimensions of the nichrome wire used?
Determine the moment of inertia of a cylinder of radius 0.56 m, height 1.8 m and density (1.47 - 0.735 r + 0.287 r2) kg/m3 about the center.
A particular guitar string is supposed to vibrate at 195 Hz, but it is measured to actually vibrate at 210 Hz. By what percent should the tension in the string be changed to get the frequency to th
A child sleds down a frictionless hill whose vertical drop is 6.6 . At the bottom is a level but rough stretch where the coefficient of kinetic friction is 0.46. How far does she slide across the l
Water and that all three samples are at 31 celcius. Rank the samples from lowest to highest temperature after 100J energy is added to each sample. Why?
A 21.5-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 88.7 N and is directed at an angle of 38 ° above the horizontal. Determin
There is a moon orbiting an Earth-like planet. The mass of the moon is 5.49 × 1022 kg, the center-to-center separation of the planet and the moon is 2.32 × 105 km, the orbital period of
The speed of the fluid at point A is 7.5 m/s while at point B it is 11 m/s. What is the difference in pressure, PB - PA, between points B and A?
How much work must be done by the brakes to bring the bike and rider to a stop? How far does the bicycle travel if it takes 4.5 s to come to rest? What is the magnitude of the breaking force?
A daring stunt woman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 15.2 m/s, and the woman is initially 2.35 m above the
Group Dynamics: Using Moreland and Levine's. Discuss if and how you experienced the phases and how you changed or the group was changed by your presence.
What does it mean to say that angular momentum is conserved? Give an example you might see on Earth. How could conservation of angular momentum help astronomers understand the development of the so
The electric output of a power plant is 770MW . Cooling water flows through the power plant at the rate 0.500*10^8L/hr . The cooling water enters the plant at 16.0C and exits at 27.0C What is the p
After the collision, the club head travels (in the same direction) at 41 m/s. Find the speed of the golf ball just after impact.
You use your thumb to exert a force of 30 newtons on the head of a thumbtack. The head of the thumbtack is a circle of radius 5 mm. What is the pressure on your thumb?
An object with a mass of 21 g displaces 957.1 ml of water when it is completely immersed. What is the buoyant force on the mass?
The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. What is her velocity relative to the ice surface? What is the velocity of the plank relative to the