The electric potential increases from 72 V to 686 V from the bottom plate to the top plate of a parallel plate capacitor. What is the magnitude of the change in potential energy of a -3 X 10^-6 C...
The electric potential increases from 72 V to 686 V from the bottom plate to the top plate of a parallel plate capacitor. What is the magnitude of the change in potential energy of a -3 X 10^-6 C...
I have some difficulties solving the weak form of the PDE: The proof of the preceding statement is elementary. The weak form of the PDE ∇·(A(x)∇u)+ω^2*q(x)*u = 0 for all φ that vanish at ∂?. Could...
I was given this worksheet in class and my professor refuses to explain it to us. I need help!! For the given sample: Wooden cube (rectangular). Measure its mass in grams...
What is the mechanical advantage of a claw foot hammer having a handle with a length of 45 cm and head length of 10 cm? a. 1/9 b. 2/9 c. 2/5 d. 5/2 e. 9/2 f...
At a dilapidated playground, people have stolen the support bar to a merry-go-round leaving a flat disk that can rotate freely. While pondering conservation of angular momentum, a curious physics...
Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and...
A long string of length 1.5 m is made of steel . The tension in it produces elastic strain of 1% . calculate its fundamental frequency ? 89 Hz 178 Hz 356 Hz ...
Wind is blowing west to east along 2 parallel tracks .Two trains moving with the same speed in opposite direction have the steam track of one double than the other .the speed of each train is ? 3...
A small loop of wire with radius 2 cm is placed in a uniform upward magnetic field. By what factor does the flux change if the radius of the loop is increased to 8 cm?
If the radius of the earth shrinks by 1.5 % (mass remaining the same ) , then the value of acceleration due to gravity changes by ? 1% 2% 3% 4%
If the radius of the earth becomes half of its present value , with its mass remaining the same , the duration of the one day will become ? 1. 6 hour 2. 12 hour 3. 48 hour 4....
At a dilapidated playground, people have stolen the support bar to a merry-go-round leaving a flat disk that can rotate freely. While pondering conservation of angular momentum, a curious physics...
How much can the cone hold? That is, what is the volume of the cone?
In considering density and buoyancy, a helium balloon floats in air even as wood floats on water. A father was bringing home balloons for a party and had attached the balloons to the seat of a van...
In comparing two unequal forces on a rigid body, is it possible to have the larger force produce less torque than the smaller force? a. Yes b. No
A typical piece of wood has a density of 750 kg/m3. How many 15.0 gram metal army men (or Barbies - your preference) could you safely float on one such piece of wood having a mass of 1.25 kg, in a...
A figure skater can increase her angular velocity from a speed of 2.00 revolutions in 3.00 seconds to 5.00 revolutions in 2.00 seconds by bringing her arms in. If her moment of inertia was 4.60 kg...
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the...
A 85.0 g bottle is filled half full with 1.00 L of water. It is filled the rest of the way will an unknown liquid. The total mass of this full bottle is 1.75 kg, what is the density of the unknown...
So I'm studying for an exam I have coming up soon and I came across this problem in the back of the book: A 70 kg man runs by a seated woman at 4.5 km/hr. The woman's mass is 55 kg...