### Mechanical advantage is the ratio of the force required

Assignment Help Physics
##### Reference no: EM13544701

Mechanical advantage is the ratio of the force required without the use of a machine (sometimes very simple machine) to that needed when using the machine. Compare the force to lift an object to that needed to slide the same object up a frictionless incline and show that the mechanical advantage of the inclined plane is the length of the incline divided by the height of the incline.

### Write a Review

#### Determine the work done on the refrigerant in each cycle

During each cycle, a refrigerator ejects 680 kJ of energy to a high-temperature reservoir, and takes in 600 kJ of energy from a low-temperature reservoir. Determine the work done on the refrigerant in each cycle. Determine the coefficient of performa..

#### White light is shone on a very thin layer ofalcohol

White light is shone on a very thin layer ofalcohol (n=1.36), and above the alcohol layer, interference maxima for two wavelengths (and no other in between) are seen: onevioletwavelength of410nm, and oneredwavelength of670nm. What is the thickness..

#### Find at what rate is he now losing thermal energy

A person is losing thermal energy through the skin at a rate of 120 W when his skin temperature is 30°C. find At what rate is he now losing thermal energy

#### How much thermal energy is created

A person who weighs 68 kg steps onto a spring scale in the bathroom, and spring compresses by 0.79cm. (a) what is the spring constant? (b) What is the weight of another person who compresses the spring by 0.34cm.

#### Find the restivity of the metal from which it is made

A wire has a diameter of1.7 mm and length of 1.3 m. If it's resistance is 15 m(Ohms), What is the restivity of the metal from which it is made

#### What is the instantaneous electric field strength of wave

An electromagnetic wave in a vacuum has an instantaneous magnetic field strength of 0.000000740 T at a certain point. What is the instantaneous electric field strength of the wave at this point?

#### Find the distance between the two first- order maxima

A laser beam with wavelength Lambda= 6328 Å is incident normal to the plane of a diffraction grating. find the distance between the two first- order maxima in the pattern

#### Define the normal force frictional force and net work

A 15kg crate is moved along a horizontal floor by pulling on it with a rope that makes a 30 degree angle with the horizontal, How much work is done by the normal force and frictional force, What is the net work

#### Estimate the wavelength of light emitted

Electrons accelerated by a potential difference of 13.08 V pass through a gas of hydrogen atoms at room temperature, Calculate the wavelength of light emitted with the shortest possible wavelength

#### Find the density of such a star

Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star

#### By how much does the film differ in thickness

A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. By how much does the film differ in thickness over the distance

#### Q1 black holes are suspected while a visible star is being

q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more