Physics help
13. A water droplet of radius 0.018mm remains stationary in air. If the downward electric field in 150N/C, how many excess electrons must the droplet have?
13. A water droplet of radius 0.018mm remains stationary in air. If the downward electric field in 150N/C, how many excess electrons must the droplet have?
An electric dipole consists of a pint charge -q at the point (0,a) and a point charge q at the pint(0,-a). Find the electric field at the point (x,0).
58. Which has the higher specific heat capacity: an object that cools quickly or an object of the same mass that cools more slowly?
. The photo shows physics teacher Marshall Ellenstein walking barefoot on broken glass bottles in his class. What physics concept is Marshall demonstrating, and why is...
. Show that the water pressure at the bottom of the 50-m-high water tower in Figure 5.3 is 490,000 N/m2, or is approximately 500 kPa
In a sporting goods store you see what appears to be two identical life preservers of the same size. One is filled with Styrofoam and the other one is filled with lead pellets. If you...
230.0 newtons @ 125 degrees 175.0 newtons @ 60.0 degrees
Please help me with this. It looks long, but it really is not. A physics student wants to determine the relationship between the radius of a charged conducting sphere and the magnitude of...
Please help! I just do not even know what I'm doing, and currently waiting for tutors to respond to work with me one on one. An unknown fluid could be determined from ρfl=(T-T'')/(T-T')...
A lab experiment was performed to find the centripetal force on a rotating body which measured mass(m), frequency(n), and radius(r). It was found that Fc=4Π2n2mr. How do I write an expression...
What Is Optical Density? Difference between optical and mass density!
how to get the time from this given my answer is f=100 p.t= 1/100 t=0.01 sec is that right?
A compressed spring has 16 J of potential energy. What's the maximum speed it can impart to a 2 kg object? Answer: 4.0 m/s
A force of 10 N stretches a spring that has a spring constant of 20 N/m. What's the potential energy stored in the spring? Answer: 2.5 J
A primitive diving bell consists of a cylindrical tank with one end open and one end closed. The tank is lowered into a freshwater lake, open end downward. Water rises into the...
Powdered steel is placed in a container filled with oxygen and fitted with a piston that moves to keep the pressure in the container constant at one atmosphere. A chemical reaction occurs that produces...
a car is submerged in 8.0 feet of water. assuming the area of one door(including window) is 10.0 ft^2. what is the pressure on the door?
Luke Autbeloe twirls a 750 gram mass on the end of a 0.82 meter string. Find the tension at the top and bottom of the orbit. Assume the mass's velocity at both top and bottom is 3.7 m/s.
A frictionless rollercoaster does a vertical loop with a radius of 6.0 m. What's the slowest speed that the rollercoaster must have at the top of the loop and avoid falling?
Harry Hotrod rounds a corner in his sports car at 50 km/h. The friction force holds him on the road. If he has twice the speed, what must be the friction force to prevent him from skidding off the...