12,727 Answered Questions for the topic physics

Physics

10/25/22

Work and Power Relationship.
A block of mass 4.43kg4.43kg is moving horizontally as a force of 263N, directed at 30.0∘30.0∘ above the horizontal, is exerted on it. When its speed is 7.76ms , what is the rate at which the force... more
Follows • 1
Expert Answers •1
Physics

10/25/22

A ball thrown at a brick wall approaches the wall at +40 m/s and, after striking the wall, bounces back at −40 m/s. What change in velocity did the ball experience?
Follows • 1
Expert Answers •1
Physics

10/25/22

velocity can either be positive or negative, depending on the direction of the displacement. the (change t), is always positive. why?
Follows • 1
Expert Answers •1
Physics

10/25/22

40.00 off coupon

Had first session today. Try to enter the $40 coupon and the system is not accepting it.
Follows • 1
Expert Answers •1
Physics

10/24/22

help in physics
As a gasoline engine is running, an amount of gasoline containing 12,000 J of chemical potential energy is burned in 1 s. During that second, the engine does 4,000 J of work.(a)What is the engine's... more
Follows • 1
Expert Answers •1
Physics

10/24/22

i cant find the answer
A machinist wishes to insert a brass rod with a diameter of 7 mm into a hole with a diameter of 6.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
Follows • 2
Expert Answers •1
Physics

10/24/22

Please help me!
A child in a boat throws a 5.65 kg package out horizontally with a speed of 10.0 m/s.  Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the... more
Follows • 0
Expert Answers •1
Physics

10/24/22

Please help me !
A 15 kg hammer strikes a nail at a velocity of 8.5 m/s and comes to rest in 6.0 ms.a) What is the impulse given to the nail?  b) What is the average force acting on the nail?  Express answers using... more
Follows • 0
Expert Answers •1
Physics

10/24/22

Please help me!

A 7100 kg boxcar traveling 12.0 m/s strikes a second car. The two stick together and move off with a speed of 4.60 m/s.  What is the mass of the second car?  Express your answer using three... more
Follows • 1
Expert Answers •1
Physics

10/24/22

physics homework help
A circus performer is shot out of a cannon and flies over a vertical net that is places at a horizontal distance of 8.80m from the cannon. When the cannon is aimed at an angle of 40 degrees above... more
Follows • 1
Expert Answers •1
Physics

10/24/22

Rotational Equilibrium and Rotational Dynamics
You turned on your classroom ceiling fan at its lowest setting. You measured that the rotation is 250 rev/min. When adjusted to its maximum setting, the speed increases to 450 rev/min in 15 s. (a)... more
Follows • 2
Expert Answers •1
Physics

10/24/22

i need some help in this questions

A machinist wishes to insert a brass rod with a diameter of 7 mm into a hole with a diameter of 6.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
Follows • 1
Expert Answers •1
Physics Calculus

10/22/22

Find the instantaneous rate of change of the volume with respect to time.
The radius of a right circular cylinder is given by √(t + 2) and its height is 1/2√t,where t is time in seconds and the dimensions are in inches. Find theinstantaneous rate of change of the volume... more
Follows • 1
Expert Answers •1
Physics Math

10/22/22

Physics (Helps pls)
A flower pot falls from a ledge of a window building. the ledge is 80m high. How long will it take the pot to hit the ground?
Follows • 1
Expert Answers •1
Physics

10/21/22

How far from the starting point is the hiker after these four legs of the hike? All angles are measured in a counter-clockwise direction from the positive x-axis. Answer in units of km
A hiker makes four straight-line walks A 12 km at 86 ◦ B 23 km at 222 ◦ C 17 km at 172 ◦ D 31 km at 122 ◦ in random directions and lengths starting at position (41 km, 41 km),
Follows • 2
Expert Answers •1
Physics

10/21/22

A girl delivering newspapers travels 3 blocks west, 6 blocks north, then 5 blocks east. What is the magnitude of her resultant displacement? .
Find the direction (measured from due east, with counterclockwise positive) of her displacement. What is the total distance she travels? Answer in units of blocks
Follows • 2
Expert Answers •1
Physics Calculus

10/21/22

Find t when the instantaneous acceleration is zero given S = t 3 − 4t 2 + 2t − 6.
Find t when the instantaneous acceleration is zero given S = t3 − 4t2 + 2t − 6.
Follows • 2
Expert Answers •1
Physics

10/21/22

Kinematics in One Dimension ( Free Fall)
A ball is dropped from a height of 60ft above ground. Find the time it takes to hit the ground.Should I first convert 60ft. to meters? or just directly substitute it on the equation.
Follows • 2
Expert Answers •1
Physics Calculus

10/21/22

A point moves along a path with an equation S = 36t − 1/3 t^3 + 24 where S is in meters and t is in seconds. Find the acceleration of the point when t = 1.
S = 36t − 1/3 t^3 + 24t = 1
Follows • 1
Expert Answers •1
Physics

10/20/22

a computer is accelerated out a window at 8m/s/s. how much force was need for this acceleration?
Follows • 1
Expert Answers •1
Physics

10/20/22

Physics elastic potential energy question

A spring-loaded toy uses a compressed spring to fire a marble out of a tube. A force of 220 Ncompresses the spring by 0.14 m. Calculate the elastic potential energy of the toy.
Follows • 0
Expert Answers •1
Physics

10/20/22

Physic(s) Work Force of Particle
A particle moves in a straight line, parallel to the x axis, from xi to xf. It is acted upon by a force that is also parallel to the x axis and is given by f(x)= b/xA.Write an expression for the... more
Follows • 1
Expert Answers •1
Physics Math

10/19/22

Physics (Vectors)

Solve the given problem using the parallelogram method and with the aid of protractor and ruler. Find the resultant of P = 6 km, 30 N of E and Q = 10 km, 50 NW.
Follows • 1
Expert Answers •1
Physics

10/19/22

Please help me!
How long will it take a 1750 W motor to lift a 305 kg piano to a sixth-story window 16.0 m above the ground?
Follows • 1
Expert Answers •1
Physics

10/19/22

Please help me!
A satellite of mass, mS, is in a circular orbit of radius, rS, around the Earth, determine its kinetic energy, K. Express your answer in terms of some or all of the variables mS, rS, and constants... 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.