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
Fynjy0 [20]
3 years ago
7

Jayne lifts the barbell 120 cm upwards. She has a mass of 60kg. How much work does she do?

Physics
1 answer:
Rasek [7]3 years ago
3 0
Work = Force x displacement
Force = mass x gravitational acceleration
Force = 60 x 9.81 = 588.6N
Work = 588.6 x 0.12m =70.632 J
You might be interested in
State the condition for maximum current to be drawn from the cell
larisa86 [58]
Use the equation I=V/R where I is current and V is the voltage plus R is the resistance so when voltage is the highest and resistance is lowest the current is the highest
7 0
3 years ago
Determine whether each of the statements below is true or false, and place it in the appropriate bin. Objects with equal speeds
lisov135 [29]

Objects with equal speeds definitely have equal velocities. -- FALSE.  For equal velocities, they also have to be going in the same direction.

If you are given an object's velocity, you can definitely determine its speed. -- TRUE.  If you know the velocity, then you know both the object's speed and its direction.

If you know the distance an object travels, and the time it takes to do so, you can determine the object's velocity. -- FALSE. Knowing the distance and time, you can figure out the object's speed.  But if you don't also know the direction it's moving, then you can't say what its velocity is.

If an object moves at constant speed, it must also be moving at constant velocity. -- FALSE.  Besides constant speed, it also needs to move in a straight line to have constant velocity.  If it turns, its velocity changes, even if its speed doesn't.

If an object moves at constant velocity, it must also be moving at constant speed. -- TRUE.  Constant velocity means its speed AND its direction are not changing.

Objects with equal velocities definitely have equal speeds. -- TRUE.  If their velocities are equal, then their speeds are equal AND they're moving in the same direction.

After laboring through this one, I'm wondering if there can possibly be any more ways to say the same thing.

7 0
3 years ago
Now, consider the resultant electric field e⃗ net at p. with reference to the coordinate system shown in the previous part, whic
Rzqust [24]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the choices:
only the x component
only the y component
both the x and y components
neither the x nor the y component

The answer is neither the x nor the y component

5 0
3 years ago
Which of the following is not a form of an inclined plane?
disa [49]

Answer: piece of paper cut into a triangle  

Explanation:

A plane surface lifted at an angle to horizontal from one edge is said to be an inclined plane. A wedge, a ramp or a screw are examples of a forms of inclined plane. A screw is like a inclined plane wound on a cylinder. These are simple machines. On the other hand, a piece of paper cut into a triangle is not an inclined plane as it does rise at an angle from horizontal. It is not a machine.

8 0
3 years ago
Read 2 more answers
Why are electromagnets used in metal scrap yards?
Andrej [43]
Because the electromagnets can pick up magnetic material and move it around, hope this helps
8 0
3 years ago
Read 2 more answers
Other questions:
  • An electrician timed a box traveling over a conveyor and measured 25 sec to travel 30 feet. If the gearbox ratio is 20:1 and the
    14·1 answer
  • Which quantity can be calculated using the equation E = mc2?
    5·2 answers
  • Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false
    11·2 answers
  • 20 Point Offer for Full Answer.
    15·1 answer
  • Between any object and surface, the coefficient of static friction is _____ the coefficient of kinetic friction.
    14·1 answer
  • A swimming pool heater has to be able to raise the temperature of the 40 000 gallons of water in the pool by 10.0 C°.
    6·1 answer
  • A car with a mass of 1,400 kg is traveling at a speed of 40 m/s. What is its momentum?
    5·1 answer
  • In running a ballistics test at the police department, Officer Rios fires a 6.1g bullet at 350 m/s into a container that stops i
    15·1 answer
  • The bar graph shows energy data taken from a roller coaster at a theme park. analyze the data and assess its validity. 3-5 sente
    11·1 answer
  • Can u help me. thank you​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!