Calculate how much power is needed to push a chest

Assignment Help Physics
Reference no: EM13663362

(a) Calculate how much power is needed to push a 91 kilogram chest at 0.67 m/s along a horizontal floor where the coefficient of friction is 0.78?

W

(b) Find how much work is done in pushing the chest 9 m?

kJ

Reference no: EM13663362

Questions Cloud

Obtain what is the speed of the ball just before it lands : A golfer hits a shot to a green that is elevated 3.0 meter above the point where the ball is struck. compute the speed of the ball just before it lands
Determine the initial speed necessary for the arrow : The Olympic Flame at the 1992 Barcelona Olympics was lit by a flaming arrow shot from a point 60 meter horizontally and 24 meter vertically from the flame. Determine the initial speed necessary for the arrow
Find what is the density of the sample : An ore sample weighs 17.50 in air. When the sample is suspended by alight cord and totally immersed in water, the tension in the cord is11.20 Newton. Find what is the density of the sample
Find the pressure exerted by the fan on the floor : A stand fan has a circular base of radius 0.2 meter and mass of 2.3 kilogram. Find the pressure exerted by the fan on the floor
Calculate how much power is needed to push a chest : Calculate how much power is needed to push a 91 kilogram chest at 0.67 m/s along a horizontal floor where the coefficient of friction is 0.78
Carnot engine operating among energy reservoirs temperatures : A Carnot engine operating among energy reservoirs at temperatures 342 K and 459 K produces a power output of 1149 W. What is the thermal efficiency of this engine? The answer to the first part is 25.4902 what is the rate of heat input, in W? What is ..
Equilibrium temperature of the cup and its contents : A 35 g ice cube at 0.0°C is added to 110 g of water in a 62 g iron cup. The cup and the water have an initial temperature of 26°C. Discover the equilibrium temperature of the cup and its contents.
Determine how much power is lost in the transmission line : A transmission line is used to send power over a distance of 4.0 kilometer through a copper power line of 1.0 Ω/km. Determine how much power is lost in the transmission line
Compute the average power delivered by the car engine : A car of mass 1420 kilogram traveling at 20 m/s is at the foot of a hill that rises 120 meter in 2 kilometer. Compute the average power delivered by the car engine

Reviews

Write a Review

Physics Questions & Answers

  Determine the magnitude of the force on the wire

A straight wire segment 4 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force on the wire

  Determine what is the value of kinetic friction

Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane of 60 degrees and the other is hanging over the top edge of the plane. what is the value of kinetic friction

  How far away is the nearby galaxy

A Cepheid variable in a nearby galaxy looks 106 times fainter than an identical Cepheid in the Milky Way. How far away is the nearby galaxy

  Consider gas of neutrons in nuclear reactor

Consider a gas of neutrons in a nuclear reactor. The neutron density is 10^8 neutrons/cm^3 in an operating reactor which has a core temperature of 535K. Are the neutrons in the reactor core a classical gas or a quantum mechanical gas and how ca n yo..

  How much time do the pilots have to take evasive action

Two planes approach each other head-on. Each has a speed of 705 km/h, How much time do the pilots have to take evasive action

  A person of weight 80 kg jumped off a platform of height 1

a person of weight 80 kg jumped off a platform of height 1 m and safely landed on his feet. what is the magnitude of

  Four identical metallic objects carry the following charges

four identical metallic objects carry the following charges 1.29 6.21 -4.54 and -9.14c. the objects are brought

  Compute the energy of the ground state

An oxygen molecule has a vibrational mode that behaves approximately like a simple harmonic oscillator with frequency 2.99 X 10^14 rad/s. Calculate the energy of the ground state

  Calculate the inductive reactance and capacitive reactance

A series AC circuit contains a resistor, an inductor of 200 mH, a capacitor of 5.20 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. The maximum current in the circuit is 180 mA.

  How high will the ball rise

A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. How high will the ball rise

  What angle does protons velocity make with magnetic field

A proton with v = 374 m/s is moving through a region in which the magnetic field is B = 2.8 T. what angle does the protons velocity make with B

  What is the centripetal force that acts on the car

A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the car's centripetal acceleration? What is the centripetal force that acts on the car?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd