## Physics B Resources Physics Work Question

Ben carries a 200N suitcase up here flights of stairs (a height of 10m) and then pushes it with a horizontal force of 50N at a constant force of 0.5M/s for a horizontal distance of 35m. How much work... A large punch bowl holds 3.35 kg of lemonade (which is essentially water) at 20.0° C.

A 0.40-kg ice cube at −10.2° C is placed in the lemonade. What is the final temperature of the system, and the amount of ice (if any) remaining? Ignore any heat exchange with the bowl or the... A wheel of mass 10 kg and radius 2m rotates with angular velocity w= 2pi rad/s

a)If constant torque is applied to the wheel and it comes to rest in 2 seconds, what is the magnitude of the angular acceleration? b) Calculate the magnitude of the torque required to bring the... A child of mass 20 kg sits at the edge of a merry-go-round of radius 2 m and mass 100 kg...

The merry go round spins freely (w/out friction) at 10 rpm. What is the total angular momentum of the system? Assume that the child is a point mass. ELECTROSCOPE QUESTION HELP!!!!!

A positively charged object is brought near but not in contact with the top of an uncharged gold leaf electroscope. The experimenter then briefly touches the electroscope with a finger. The finger...

What volume of iron (density 7.87 g/cm3) would be required to balance a 1.00 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance? Gauss's Law: Find expression for the electric field

A slab of nonconductive material is perpendicular to the z-axis, centered on the origin, has a total thickness of 40 mm, and is infinite along the other two axes. It has a uniform volumetric charge... Derive expression for speed

Derive a symbolic expression for the speed v at which a particle of charge -Q and mass m must move to hold itself in a circular orbit of radius r centered on a massless particle of charge 4Q that... Find Electric Field along z-axis

An infinite number of identical charged rings of radius w and charge Q are arranged coaxially along the z- axis such that each adjacent pair is a distance w apart and one lies with the origin in its... Electric Fields

Find the electric field vector at the origin due to an infinitely long, straight line bearing a uniform linear charge density of 360 fC/m. The line charge is tilted at π/4 radians such that it runs... Physics problem - pleaseeeee need help!

I'm editing this problem because I was able to get a couple of the answers, but I still need help on the rest. An electromagnatic wave is traveling in vacuum with frequency 7 x 1014 Hz. The wave has... Capacitors in Combination-Find Each Charge

C1 and C2 are capacitors in parallel. C3 is in series with C12. C1=16.6 microF, C2=8.2 microF, C3=0.3 microF. A 1.52 V battery is connected in this combination. Find the charge stored... How to calculate a jump

If I wanted to build a 27ft jump how do i bu it and how fast do i hit it Final Angular Velocity. Need help w/ part 4

A phonograph turntable driven by an electric motor accelerates at a constant rate (i.e., constant angular acceleration) from 0 to 33.33 revolutions per minute in 2 minutes. The turntable is a... Astrophysics question

Object A emits most strongly at 400 nm, while object B emits most strongly at 800 nm. What can we say about their relative temperatures? A’s temperature is the same as B’s. Nothing. Temperature...

A spring requires a force of 25 N to produce an extension of 2 cm in it. What is the work done in further extending it by 3 cm. Free fall word problem

A ball is thrown upward with an initial velocity of 19.6m/s.what is the max height the ball will reach before falling back down?   Just want to check if my answer is correct, I ended...