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
mr_godi [17]
3 years ago
14

If the sum of the external forces on an object is zero, then the sum of the external torques on it

Physics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

True.

Explanation:

If the sum of the external forces on an object is zero, then the sum of the external torques on it  must also be zero.

The net external force and the net external torque acting on the object have to be zero for an object to be in mechanical equilibrium.

Hence, the given statement is true.

You might be interested in
Based on Newton's law of motion, which combination of rocket bodies and engine will result in the acceleration of 40 m/s ^2 at t
ad-work [718]

The question is incomplete. The complete question is :

The Rocket Club is planning to launch a pair of model rockets. To build the rocket, the club needs a rocket body paired with an engine. The table lists the mass of three possible rocket bodies and the force generated by three possible engines.

A 4-column table with 3 rows. The first column labeled Body has entries 1, 2, 3. The second column labeled Mass (grams) has entries 500, 1500, 750. The third column labeled Engine has entries 1, 2, 3. The fourth column labeled Force (Newtons) has entries 25, 20, 30.

Based on Newton’s laws of motion, which combination of rocket bodies and engines will result in the acceleration of 40 m/s2 at the start of the launch?

Body 3 + Engine 1

Body 2 + Engine 2

Body 1 + Engine 2

Body 1 + Engine 1

Solution :

Given :

Body       Mass (gram)     Engine      Force (newtons)

1                   500                 1                     25

2                  1500                2                    20

3                  750                  3                    30

The body 1 has a mass of 500 gram which is equal to 0.5 kg

And engine 2 has a force of 20 newtons.

We know that according to Newton's laws of motion,

Force = mass x acceleration

 20    = 0.5 x acceleration

Acceleration $=\frac{20}{0.5}$

                      $=\frac{200}{5}$

                      $= 40 \ m/s^2$

Therefore, based on laws of motion of Newton, the Body 1 + Engine 2 combination of the rocket bodies and engines will result in an acceleration of $ 40 \ m/s^2$ at the start of the launch.

8 0
3 years ago
Could someone help me with this<br> you will get 20pts
jarptica [38.1K]

Answer:

left column Right column

Option 1 - Option 4

Option 2 - Option 1

Option 3 - Option 3

Option 4 - Option 2

Explanation:

the circulatory system is things like veins which transport blood cells through the body

the digestive system is things like your stomach and esophagus which digests food and turns it into energy

the respiratory system is things like lungs, which moves air through your body

and the skeletal system is things like bones, which help you move but also protect vital organs

Please mark brainliest :)

5 0
3 years ago
Read 2 more answers
A car traveling in a straight line has a velocity of 5.0 m/s. After an acceleration of 0.75 m/s/s, the cars velocity is 8.0. In
Bogdan [553]
Vs - velocity on beginning
ve - velocity on ending. You've got:
v_s = 5 \frac{m}{s} \\ v_e=8 \frac{m}{s} \\ \hbox{Then:} \\ \Delta v=v_e - v_s = 8 \frac{m}{s} - 5\frac{m}{s}=3 \frac{m}{s} \\ a=0,75 \frac{m}{s^2} \\ \hbox{And from formula:} \\ a=\frac{\Delta v}{\Delta t} \qquad \Rightarrow \qquad  \Delta t= \frac{\Delta v}{a} \\ \hbox{Substitute:} \\ \Delta t=\frac{3\frac{m}{s}}{0,75 \frac{m}{s^2}}= \frac{3}{\frac{3}{4}} s= 3 \cdot \frac{4}{3} s= 4 s
So he needed  4 second. 

3 0
3 years ago
An ice cube is placed in a microwave oven.
Juli2301 [7.4K]

Answer:

It takes 266 seconds to melt the ice.

Explanation:

Given data

  • Power of the microwave oven (P): 125 Watt
  • Heat supplied to the ice (Q): 33,200 Joule
  • Time for the melting (t): to be determined

In order to determine the time required to melt the ice, we can use the following expression.

P = Q/t

t = Q / P = 33,200 J/ 125 W = 266 s

It takes 266 seconds to melt the ice.

5 0
3 years ago
How do you find the letters to the science weather​
yaroslaw [1]

Answer:

ummmm

Explanation:

3 0
3 years ago
Other questions:
  • When you add heat to wood it burns. The cellulose that makes up wood is converted to carbon dioxide, water vapor, and ash. This
    5·2 answers
  • Imagine two artifical satellites with equal masses orbiting earth.One satellite is orbiting closer to earth than the other satel
    5·1 answer
  • Please Help me with any of these possible.
    8·1 answer
  • Evaluate the amount of thermal energy lost from a 0.5 kg glass
    15·1 answer
  • How much kinetic energy does Bryan have?
    13·1 answer
  • The external cover of aeroplane is made up of aluminium instead of iron. Why?
    8·2 answers
  • WILL MARK BRAINLIEST. Please identify the nuclear process that uses up a star's core hydrogen and produces the energy released b
    15·1 answer
  • An airplane is traveling from North Africa to England. Which arrow correctly shows the direction gravity pulls the plane?
    6·1 answer
  • Why are antennas needed for radio, television, and cell phone transmission&gt;
    12·1 answer
  • Anne pushed a cart by 12 N. How far did the cart move if the work done was 9 J?​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!