answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marin [14]
2 years ago
5

Joel uses a claw hammer to remove a nail from a wall. He applies a force of 40 newtons on the hammer. The hammer applies a force

of 160 newtons on the nail. The mechanical advantage of the hammer is .
Physics
2 answers:
Dahasolnce [82]2 years ago
5 0

Answer:

Explanation:

We know that the mechanical advantage of the hammer is is given by the ratio between the force applied on the hammer and the force required to overcome the given force.Force applied = 40 NForce required= 160 NMechanical advantage =Mechanical advantage =

Hence, the mechanical advantage of the hammer is 4.

Neporo4naja [7]2 years ago
5 0

Force B / Force A

So, 160 / 40 = 4

You might be interested in
A pump jack scaffold must be fitted with two ______ gripping mechanisms to prevent slippage.
FromTheMoon [43]
A pump jack scaffold must be fitted with two positive gripping mechanisms to prevent slippage. Pump jacks are a uniquely designed scaffold consisting of a platform supported by movable brackets on vertical poles. The brackets are designed to be raised and lowered in a manner similar to an automobile jack. It is important to make sure that pump jack brackets have two positive gripping mechanisms to prevent any failure or slippage. 
5 0
2 years ago
An astronomer observes that the wavelength of light from a distant star is shifted toward the red part of the visible spectrum.
balandron [24]

Answer:

The distance between the earth and the star is increasing.

Explanation:

When we observe an object and its electromagnetic radiation has been displaced to blue, it means that it is getting closer to us, causing the light waves it emits to get closer together and its wavelength to decrease towards blue, this is knowm as blueshift.

On the contrary, when an object is rapidly moving away from us, the light waves or electromagnetic radiation it emits have been stretched from their normal wavelength to a longer wavelength, towards the red part of the spectrum. This is known as redshift.

This phenomenon of changes in wavelength and frequency due to movement (whether the source approaches or moves away) is described by the Doppler effect.

So for this case because the light we perceive from the star has moved to the red part of the visible spectrum, we can conclude that it is moving away from the earth, and that the distance between the star and the earth is increasing.

7 0
2 years ago
A ball is thrown forward at 5 m/s. How would the path of the ball differ on Earth than on the moon? The ball would follow a curv
Kobotan [32]

Answer:

c

Explanation:

.

4 0
2 years ago
Read 2 more answers
A small rock is thrown vertically upward with a speed of 22.0 m/s from the edge of the roof of a 30.0-m-tall building. The rock
RSB [31]

To solve this problem we will apply the kinematic equations of linear movement. For this purpose we will begin to define the final speed of the body before hitting the street. The first equation will begin using the difference in velocities as a function of acceleration (gravity) and position. And the second will use the concept of acceleration, time and speed, to find the time variable.

PART A) Equation of motion is

v^2-u^2 = 2as

v^2 = u^2+2as

Replacing,

v^2 = 22^2+2(9.8)(30)

v = 32.74m/s

The speed of rock before hitting the ground is 32.74m/s

PART B) Equation of motion

v-u=at

t = \frac{v-u}{a}

t = \frac{32.74-(-22)}{9.8}

t = 5.58s

Therefore the time taken by the rock is 5.58s

4 0
2 years ago
A fisherman casts his bait toward the river at an angle of 25° above the horizontal. As the line unravels, he notices that the b
Butoxors [25]

Answer:

v_{o}=18m/s

Explanation:

According to the exercise we know the angle which the bait was released and its maximum height

\beta =25\\y=2.9m

To find the initial y-component of velocity we need to do the following steps:

v_{y}^{2} =v_{oy}^{2}+2g(y-y_{o})

At maximum height the y-component of velocity is 0 and from the exercise we know that the initial y position is 0

0=v_{oy}^{2}-2(9.8m/s^2)(2.9m)

v_{oy}=\sqrt{2(9.8m/s^{2} )(2.9m)} =7.53m/s

Since the bait is released at 25º

v_{oy}=v_{o}sin(25)

v_{o}=\frac{7.53m/s}{sin(25)}=18m/s

6 0
2 years ago
Other questions:
  • A parachute works because the canvas of the parachute is acted upon by __________.
    5·2 answers
  • The average mass of an automobile in the United States is about 1.440x10^6 g express this mass in kilograms
    15·1 answer
  • A system delivers 1275 j of heat while the surroundings perform 855 j of work on it. calculate ∆esys in j.
    8·1 answer
  • What boolean operation does the circuit compute?
    11·1 answer
  • Explain how scientists know that elephants and hyraxes are related. Be sure to include anatomical similarities as well as fossil
    7·2 answers
  • Imagine that you are sitting in a closed room (no windows, no doors) when, magically, it is lifted from Earth and sent accelerat
    14·1 answer
  • Diffraction spreading for a flashlight is insignificant compared with other limitations in its optics, such as spherical aberrat
    7·1 answer
  • Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different direc
    8·1 answer
  • A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay and appears as kinetic energy
    7·1 answer
  • A dolphin swims due east for 1.90 km, then swims 7.20 km in the direction south of west. What are the magnitude and direction of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!