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
vekshin1
3 years ago
7

Can someone pls help me with this? Its due in 25 minutes

Physics
1 answer:
olga_2 [115]3 years ago
3 0

Answer:

Ty for the coins

Explanation:

You might be interested in
¿A qué velocidad debe circular un auto de carreras para recorrer 87 km en 20 min? (pasar a metros por segundo m/s)
Alexxx [7]

Answer:

Velocidad en m / s = 72,25 m / s

Explanation:

Dado

Distancia a recorrer por el coche de carreras = 87 Km

1 km = 1000 m

Por lo tanto, 87 km = 87000 m

Tiempo necesario para viajar 87 km / 87000 metros = 20 minutos o 20 * 60 = 1200 segundos

Velocidad en m / s = 87000/1200

Velocidad en m / s = 72,25 m / s

7 0
3 years ago
A gas that is exist in outer space is made of ?
DochEvi [55]

I think the awnser is Dark Matter

3 0
4 years ago
Read 2 more answers
When an electron is displaced in a semiconductor, the hole that's left behind is
morpeh [17]

Answer:

A. attracted to the negative terminal of the voltage source.

Explanation:

When an electron is displaced in a semiconductor, the hole that's left behind is

A. attracted to the negative terminal of the voltage source.

The electron leaving leaves a net + charge, which is attracted to the negative terminal.

8 0
3 years ago
Does time stand still in space
ruslelena [56]

Answer:

It's mostly known that time stops moving in a black hole, as for space, its known the spacetime changes over time. A black hole in such a state is essentially stationary. So for my research, time does not stand still in space unless were taking about black holes.

Explanation:

6 0
3 years ago
Read 2 more answers
Say that you are in a large room at temperature TC = 300 K. Someone gives you a pot of hot soup at a temperature of TH = 340 K.
DiKsa [7]

Answer:0.061

Explanation:

Given

T_C=300 k

Temperature of soup T_H=340 K

heat capacity of soup c_v=33 J/K

Here Temperature of soup is constantly decreasing

suppose T is the temperature of soup at any  instant

efficiency is given by

\eta =\frac{dW}{Q}=1-\frac{T_C}{T}

dW=Q(1-\frac{T_C}{T})

dW=c_v(1-\frac{T_C}{T})dT

integrating From T_H to T_C

\int dW=\int_{T_C}^{T_H}c_v(1-\frac{T_C}{T})dT

W=\int_{T_C}^{T_H}33\cdot (1-\frac{300}{T})dT

W=c_v\left [ T-T_C\ln T\right ]_{T_H}^{T_C}

W=c_v\left [ \left ( T_C-T_H\right )-T_C\left ( \ln \frac{T_C}{T_H}\right )\right ]

Now heat lost by soup is given by

Q=c_v(T_C-T_H)

Fraction of the total heat that is lost by the soup can be turned is given by

=\frac{W}{Q}

=\frac{c_v\left [ \left ( T_C-T_H\right )-T_C\left ( \ln \frac{T_C}{T_H}\right )\right ]}{c_v(T_C-T_H)}

=\frac{T_C-T_H-T_C\ln (\frac{T_C}{T_H})}{T_C-T_H}

=\frac{300-340-300\ln (\frac{300}{340})}{300-340}

=\frac{-40+37.548}{-40}

=0.061

4 0
3 years ago
Other questions:
  • Newton's law of universal gravitation works well in ordinary situations on earth, but it does not work well
    11·2 answers
  • After the fission of U-235 takes place, how many neutrons does the missing nucleus have?
    7·2 answers
  • Temperature is usually measured in degrees with a(n)
    14·1 answer
  • Which direction do we NORMALLY expect our weather to come from in Enfield​
    6·1 answer
  • Luis wanted to know which of his 4 toy cars is the fastest. He conducted an experime and recorded his results in the table shown
    14·1 answer
  • A boy with a mass of 30kg rides a merry-go round with a radius of 1.5 meters and a velocity of 0.38 m/s. What is the centripetal
    9·1 answer
  • A 55.0 kg runner who weighs 539.0 N is accelerating at 3.2 m/s2. After 2
    5·2 answers
  • 1).which of the following describes the interaction between a south pole and a north pole of a magnet
    15·1 answer
  • Hi! Can you guys help me on my Re-do test I don’t want to fail. Ten points plus Brainliest if all are correct. Thanks!
    15·2 answers
  • What is the quantity that has the units of m/s^2?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!