12,834 Answered Questions for the topic physics

Physics

05/07/22

You are given a number of 22 Ω resistors, each capable of dissipating only 2.1 W without being destroyed.

You are given a number of 22 Ω resistors, each capable of dissipating only 2.1 W without being destroyed. What is the minimum number of such resistors that you need to combine in series or in... more
Follows • 1
Expert Answers •1

05/06/22

PLEASE HELPPP URGENTTTT!!!!! The flight of a javelin released 6.5 feet..... ANSWER ALL PART PLZ
The flight of a javelin released 6.5 feet from the ground at an initial velocity of 68 feet per second is modeled by the function h = -16t² + 68t + 6.5 where h is the height of the javelin in feet... more
Follows • 1
Expert Answers •1
Physics

05/05/22

Session Payment
Hello,I am looking for a tutor. If I am not satisfied with the first session, will that session be free? And is it like that for all the tutors I see?Best,Alvi
Follows • 1
Expert Answers •1
Physics

05/05/22

Rotational motion problems

A kid pushes a stationarymerry-go-round, creating anacceleration of 0.135 rad/s^2.How much time does it take themerry-go-round to complete2.00 rotations?Can someone answer this thourghly please?
Follows • 1
Expert Answers •1
Physics

05/04/22

centripetal motion (FC)
The law has for 4 shapesF(c)= m.a(c)Fc=m×4π²r /T². (He He squared the law for the circumference of a circle so why is it r and not r²)F(c)= m v²/r. F(c)= m.4π² r . f². (Why it's... more
Follows • 1
Expert Answers •1
Physics Math Science

05/04/22

PHYSICS Ray Diagrams
I have a few problems to solve about ray diagrams:PART 1:A certain concave, spherical mirror has a focal length of 53.0 cm. If the object is 42 cm high and is situated 155 cm in front of the... more
Follows • 1
Expert Answers •1
Physics

05/04/22

Physic Question #3
By how much does a 66-kg mountain climber stretch her 0.596-cm diameter nylon rope when she hangs 30 m below a rock outcropping? (For nylon, Y=1.35 × 109Pa.) Round your answer to 4 decimal places
Follows • 3
Expert Answers •1
Physics

05/04/22

Physics Question#2
TV broadcast antennas are the tallest artificial structures on Earth. In 1987, a 70-kg physicist placed himself and 344 kg of equipment at the top of a 647-m-high antenna to perform gravity... more
Follows • 1
Expert Answers •1
Physics

05/04/22

Physics Question
The “lead” in pencils is a graphite composition with Young’s modulus of approximately 1.0×109 N/m2. Calculate the change in length of the lead in an automatic pencil if you tap it straight into the... more
Follows • 1
Expert Answers •1
Physics Science

05/04/22

Physics please help!
A horizontal beam of light enters a 45o-90o-45o prism at the center of its long side, as shown below. The emerging ray travels in a direction that is 34o below the horizontal. What is the index of... more
Follows • 1
Expert Answers •1
Physics

05/04/22

physics and torque
helpDuring a very quick stop, a car decelerates at 6.8 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires (and that they do not slip on the... more
Follows • 1
Expert Answers •1
Physics

05/04/22

torque in physics
You have a horizontal grindstone (a disk) that is 93 kg, has a 0.33 m radius, is turning at 86 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in... more
Follows • 1
Expert Answers •1
Physics

05/03/22

Item at position 4 Find the equivalent resistance of a 3.44 ohm, a 6.75 ohm, and a 9.27 ohm resistor sitting in series
Follows • 1
Expert Answers •1
Physics

05/03/22

You pull a 70-kg crate at an angle of 30° above the horizontal. If you pull with a force of 600N and the coefficient of kinetic friction is .4, how far will it move in 3 seconds?

Follows • 1
Expert Answers •1
Physics

05/03/22

If q1 and q2 have the same charge of 60 µC with a magnitude of the force between them is 500 N, what is the distance separated these two charges?
Follows • 1
Expert Answers •1

05/03/22

Explain for each of the following cases, whether or not you are likely to be able to see your own reflection in a window
Window glass may be better at transmitting light than reflecting it, but there are certain circumstances where it is very clear that some light is reflected. Explain for each of the following... more
Follows • 1
Expert Answers •1

05/03/22

A buoy floating on a lake is seen to rise and fall 20 times in a minute. What is the frequency with which the buoy oscillates?
A buoy floating on a lake is seen to rise and fall 20 times in a minute. What is the frequency with which the buoy oscillates?What is the period of motion?If water waves on the lake are traveling... more
Follows • 2
Expert Answers •1

05/03/22

How much time would it take for a ray of light to travel between the two hills?
Galileo tried to measure the speed of light by having two people stand on hills about 5km apart. Eachwould hold a shuttered lantern. The first would open his lantern and when the second saw the... more
Follows • 1
Expert Answers •1
Physics

05/02/22

Rotational motion/angular acceleration

A barrel ride at an amusement parkis turning 2.30 rad/s when it startsto slow down. After making 5.00revolutions, it is rotating at1.11 rad/s. How much time didthat take?(Unit = s)can someone... more
Follows • 1
Expert Answers •1
Physics

05/02/22

Rotational Motion/angular acceleration

A barrel ride at an amusement parkis turning 2.30 rad/s when it startsto slow down. After making 5.00revolutions, it is rotating at1.11 rad/s. How much time didthat take?(Unit = s)can someone... more
Follows • 1
Expert Answers •1
Physics

05/02/22

Rotational motion problems/angular acceleration

A barrel ride at an amusement parkstarts from rest and speeds up to0.520 rev/sec in 7.26 s. What isthe angular acceleration duringthat time?could someone plz answer this thourgly?
Follows • 1
Expert Answers •1
Physics

05/02/22

Physics Equilibrium
A 4.30 kg sign hangs from 2 wires. The left wire exerts a 31.0 N force at 122 degrees. What is the magnitude of the force exerted by the 2nd wire?
Follows • 2
Expert Answers •1
Physics

05/02/22

Acting Normal Force
A 15.0 kg crate sits on a 20.0 kg table, which sits on the floor. What is the normal force acting on the crate?
Follows • 1
Expert Answers •1
Physics

05/02/22

Physics Friction Problem
An 84.7 cross country skier on snow has a coefficient of friction = 0.131. With how much force must he push to move at constant speed?
Follows • 1
Expert Answers •1
Physics

05/02/22

A neutral object
A. is repelled by a negatively or positively charged object.B. is attracted to either positively or a negatively charged object.C. is attracted to positively charged objects only.D.is attracted to... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.