Thursday
December 12, 2013

# Posts by physics

Total # Posts: 359

help
from which equations is the following equation derived from: length=(time^2 * g)/4

emily
What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro culumbs and q2= -5 micro culumbs

jane
In an electric field described by E = (20i+60j) V/m calculate the change in potential for a particle that moves from the origin to the coordinates (3,3)m

TOm
Hello, this is the last question that I can't seem to or be able to solve: 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. The drag coefficient of Jenny is 0.300, the surface of contact with air is 0.750 m^2 and the air density is 1,3...

electric force/field
Three point charges, A = 2.2 µC, B = 7.5 µC, and C = -3.9 µC, are located at the corners of an equilateral triangle . Find the magnitude and direction of the electric field at the position of the 2.2 µC charge. magnitude = . N/C direction =

victor.M
What is the resulting temperature when a 150g cube of ice at zero degrees is added to 200g of water in a aluminium cup at 30 degrees

A man wants to cross a river 500 m wide which flows at speed of 2 km/hr.the man rows a boat perpendicular to the river flow at 3 km/hr relative to the river.what is relative velocity of boat relative to the ground?
Velocity of boat relative to the river(vbr):3 km/hr, velocity of river relative to ground(vrg) :2 km/hr. Velocity of boat relative to the ground(vbg): square root of 9+4

Physics 101
The systemis in equilibrium and the pulleys are frictionless and massless. |_________________________| l l l ( . ) l / \ | / \ ( . ) 8kg | I 2kg ( . ) | / \ | I 6kg ______V____I____________________ _________________________________| Find the force T. The acceleration of gravit...

physics101
A uniform 7.1 m tall aluminum ladder is leaning against a frictionless vertical wall. The ladder has a weight of 272 N. The ladder slips when it makes a 57.0degrees angle with the horizontal floor. Determine the coefficient of static friction between the ladder and the floor.

physics
A boat moves through the water with two forces acting on it. One is a 2.80×10 3 N forward push by the motor, and the other is a 1.56×10 3 N resistive force due to the water. a)What is the acceleration of the 1312.6 kg boat? Answer in units of m/s^2 b)If it starts f...

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