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
Serggg [28]
3 years ago
14

Mary is 52kgs and standing on a ladder. What forces are acting on her?

Physics
1 answer:
Rus_ich [418]3 years ago
8 0

Answer:

3 forces are acting on her: Friction, Gravity and Muscular force.

Explanation:

Due to gravity and friction she is remaining on the ladder without flying and by not slipping.

Because of muscular force she is being able to interact with ladder and stand on it. Otherwise she will fell down.

You might be interested in
A roller coaster uses 800 000 J of energy to get to the top of the first hill. During this climb, it gains 500 000 J of potentia
Zarrin [17]

Answer:

<em>Good Luck!</em>

Explanation:

6 0
2 years ago
How does an atom develop a positive charge
Dmitry [639]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ A normal atom has the same amount of electrons and protons, making it neutral. An atom develops a positive charge when it loses an electron(s). Once it loses an electron(s), there would now be more protons that electrons.

Short answer: by losing an electron(s)

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

8 0
3 years ago
A satellite, orbiting the earth at the equator at an altitude of 400 km, has an antenna that can be modeled as a 1.76-m-long rod
ivann1987 [24]

Answer:

The inducerd emf is 1.08 V

Solution:

As per the question:

Altitude of the satellite, H = 400 km

Length of the antenna, l = 1.76 m

Magnetic field, B = 8.0\times 10^{- 5}\ T

Now,

When a conducting rod moves in a uniform magnetic field linearly with velocity, v, then the potential difference due to its motion is given by:

e = - l(vec{v}\times \vec{B})

Here, velocity v is perpendicular to the rod

Thus

e = lvB           (1)

For the orbital velocity of the satellite at an altitude, H:

v = \sqrt{\frac{Gm_{E}}{R_{E}} + H}

where

G = Gravitational constant

m_{e} = 5.972\times 10^{24}\ kg = mass of earth

R_{E} = 6371\ km = radius of earth

v = \sqrt{\frac{6.67\times 10^{- 11}\times 5.972\times 10^{24}}{6371\times 1000 + 400\times 1000} = 7670.018\ m/s

Using this value value in eqn (1):

e = 1.76\times 7670.018\times 8.0\times 10^{- 5} = 1.08\ V

5 0
3 years ago
What’s the velocity of a sound wave traveling through air at a temperature of 18°C (64.4°F)?
Anna11 [10]

Answer:

342 m/s

Explanation:

The velocity of sound in air is approximated as:

v ≈ 331.4 + 0.6 T

where v is the velocity in m/s and T is the temperature in Celsius.

At T = 18:

v ≈ 331.4 + 0.6 (18)

v ≈ 342.2

The velocity is approximately 342 m/s.

4 0
3 years ago
Read 2 more answers
Velocity question...is it A B Cor D
Ket [755]
In a constant acceleration of 3m per second, after 10 seconds,

3 x 10 = 30

B. 30m/s is your answer

hope this helps :D
6 0
2 years ago
Read 2 more answers
Other questions:
  • What happens when a cell stops using energy?
    14·2 answers
  • On the Moon, the acceleration due to the effect of gravity is only about 1/6 of that on Earth. An astronaut whose weight on Eart
    15·1 answer
  • A student collected data about the distance a car travels over time.
    11·2 answers
  • Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED screens. Part of the CRT include
    11·1 answer
  • which narrative point of view uses outside of the story who know. the thoug,feelings,futures and of every character?​
    14·1 answer
  • Two male moose charge at each other with the same speed and meet on a icy patch of tundra. as they collide, their antlers lock t
    10·1 answer
  • What are three ways in which people use microwaves
    7·2 answers
  • How many drive cycles can be completed with a initially fully charged battery?
    5·1 answer
  • Two tugs are towing a small ship. The tugs pull with forces of 600 N and 800 N respectively and there is an angle of 45 degrees
    9·1 answer
  • If the Test Section area has an air speed of 10 m/s, what would be the air speed at the Air Intake area
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!