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
Yuliya22 [10]
3 years ago
11

An iron weight, suspended by a string, is motionless. The tension in the string is 4.75 newtons. What is the mass of the iron we

ight?
Physics
1 answer:
kakasveta [241]3 years ago
7 0
Since weight is motionless, net force is equal to zero.
According to Newton's 2nd law of motion,

T - mg = 0-----------(T = tension, mg = weight of mass)

4.75 = m x 9.8
m = 4.75/9.8

m = 0.48 kg.

Hope this helps\!
You might be interested in
A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions. What is the average intensity
umka21 [38]

Answer: 29.85\ W/m^2

Explanation:

Given

Power P=60\ W

Distance from the light source r=0.4\ m

Intensity is given by

I=\dfrac{P}{4\pi r^2}

Inserting values

\Rightarrow I=\dfrac{60}{4\pi (0.4)^2}\\\\\Rightarrow I=\dfrac{60}{2.010}\\\\\Rightarrow I=29.85\ W/m^2

3 0
3 years ago
Read 2 more answers
A block with mass ma = 14.0 kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second
Drupady [299]
<span>We can assume that the horizontal surface has no friction and the pulley is massless. We can use Newton's second law to set up an equation. F = Ma F is the net force M is the total mass of the system a is the acceleration a = F / M a = (mb)(g) / (ma + mb) a = (6.0 kg)(9.80 m/s^2) / (6.0 kg + 14.0 kg) a = 58.8 N / 20 kg a = 2.94 m/s^2 The magnitude of the acceleration of the system is 2.94 m/s^2</span>
7 0
4 years ago
The net force acting on an object equals the applied force plus the force of friction.
Georgia [21]

Answer:

False

Explanation:

The net force is equal to the applied force minus the force of friction. It is possible for friction to act in the same direction as an applied force, but that would mean there would have to be more than two forces acting on the object.

3 0
3 years ago
Heat traveling through a pan to warm food in the pan is an example of what kind of heat transfer?
iVinArrow [24]

Answer:

A

Explanation:

8 0
3 years ago
Read 2 more answers
Which statement BEST explains why the specific heat of water is higher than the specific heat of most other substances?
solniwko [45]
Due to its polarity and hydrogen bonding water can absorb heat without a significant temperature change.. The high specific heat of water helps regulate the rate at which air changes temperature, which is why the temperature change between seasons is gradual instead of sudden, especially near the oceans.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Newton's law of universal gravitation works well in ordinary situations on earth, but it does not work well
    11·2 answers
  • a train engineer drives a train 235 km north along a straight track . then he drives the train back south 126 km . finally , he
    15·1 answer
  • Which of the following is the FINAL step in a forecasting​ system?A.Validate and implement the results.B.Select the forecast​ mo
    12·1 answer
  • Which best describes the purpose of a controlled experiment?
    9·1 answer
  • An amoeba is a one-celled protist. Amoeba contain all the organelles of a typical eukaryotic animal cell. It is a heterotroph an
    10·1 answer
  • How is accerleration represented<br> on a<br> car’s speedometer?
    8·1 answer
  • explain why if charge cannot be created or destroyed, electrically neutral objects can become electrically charged
    6·1 answer
  • A car of mass 1490 kg makes a
    5·1 answer
  • What natural resources are in a computer?
    7·1 answer
  • During a power outage, people use generators. What does a geneszitor dia?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!