1answer.
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
Step2247 [10]
3 years ago
9

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics
1 answer:
emmasim [6.3K]3 years ago
8 0
A. Joule... Energy is measured in joules
You might be interested in
A 56 kg woman climbs the stairs to a height of 5 m. Determine: a) what mechanical work
Aleonysh [2.5K]

Answer:

a) W = 2746.8[J]

b) W = 2992.05 [J]

Explanation:

Work is defined as the product of force by distance. We must bear in mind that the force that performs the work is the one that acts in the same direction of displacement.

For this case, we must calculate the weight of the woman, the weight is defined as the product of mass by gravity.

w=m*g\\

where:

w = weight [N] (units of Newtons]

m = mass = 56 [kg]

g = gravity acceleration = 9.81 [m/s²]

w=56*9.81\\w=549.36[N]

a)

W=F*d

where:

F = weight = 549.36[N]

d = distance = 5 [m]

W = 549.36*5\\W = 2746.8[J]

b)

The new mass will be the combination of the mass of the woman plus that of the load.

m_{new} = 56+5\\m_{new}=61[kg]

w_{new}=61*9.81\\w_{new}=598.41[N]

The new work done.

W =598.41*5\\W=2992.05[J]

4 0
3 years ago
A piano string having a mass per unit length of 5.00 g/m is under a tension of 1350 N. Determine the speed of transverse waves i
padilas [110]

Answer:

The speed of transverse waves in this string is 519.61 m/s.

Explanation:

Given that,

Mass per unit length = 5.00 g/m

Tension = 1350 N

We need to calculate the speed of transverse waves in this string

Using formula of speed of the transverse waves

v=\sqrt{\dfrac{T}{\mu}}

Where, \mu = mass per unit length

T = tension

Put the value into the formula

v = \sqrt{\dfrac{1350}{5.00\times10^{-3}}}

v =519.61\ m/s

Hence, The speed of transverse waves in this string is 519.61 m/s.

6 0
3 years ago
An object moves in uniform circular motion at 25 m/s and takes 1.0 second to go a quarter circle. Calculate the centripetal acce
tekilochka [14]

Given:

Object in circular motion 25 m/s

1 second to go quarter circle

Required:

Centripetal acceleration:

Solution:

Acceleration = v2/r

Where v is the velocity and r is the radian

Substituting the values into the equation,

Acceleration = v2/r = (25 m/s)2/(4*pi/180) = 8952.47 m2/s2

4 0
4 years ago
Which is a characteristic of nuclear funsion?
disa [49]

Nuclear fusion is where two Nucluir collide and form a new atom and release a tremendous amount of energy it requires a high activation energy and we cant use it for an energy source as its to dangerous 

hope that helps 

5 0
4 years ago
How is force related to physics ?
il63 [147K]

Answer:

In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. ... A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N).

3 0
3 years ago
Read 2 more answers
Other questions:
  • A diver who is 10.0 meters underwater experience has a pressure of 202 kPa. If the diver’s surface area is 1.50 meters squared,
    12·1 answer
  • Elements, or single atoms, are built out of:
    11·2 answers
  • A doctor pushes the plunger of syringe down and then pulls it up to a draw liquid into a syringe? give reason please help me wit
    15·1 answer
  • Why do atoms bond? Describe examples of the two ways elements complete their valence
    13·2 answers
  • A small block of mass m1 is released from rest at the top of a curve-shaped, frictionless wedge which sits on a frictionless hor
    5·2 answers
  • A copper calorimeter can with mass 0.100kg contains 0.160kg of water and 0.018kg of ice in thermal equilibrium at atmospheric pr
    6·1 answer
  • An object is placed near a plane mirror. What must be true about the image if the image distance is negative?
    12·1 answer
  • Plz help me
    5·1 answer
  • A 2.0-kg pistol fires a 1.0-g bullet with a muzzle speed of 1000 m/s. The bullet then strikes a 10-kg wooden block resting on a
    13·1 answer
  • What causes the movement of the crust that leads to volcanoes, mountains, and seafloor spreading?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!