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
Trava [24]
3 years ago
9

All objects in the universe radiate some form of energy. a. True b. False

Physics
2 answers:
Inessa [10]3 years ago
5 0
True . but also depends on which kind of object because if you have metal it will not really form energy in my opinion it will just attract another object.

hope i helped

Harrizon [31]3 years ago
3 0

That's true.  The only way to stop an object from radiating energy
is to cool it to absolute zero.  Since the temperature of space is
roughly 3 degrees above absolute zero, the atoms or molecules
of every object have some kinetic energy, and the object radiates
some heat. 

Of course it also absorbs heat at the same time, mostly from the
huge number of stars shining on it.

You might be interested in
30) A force produces power P by doing work W in a time T. What power will be produced by a force that does six times as much wor
schepotkina [342]

Answer:

A) 12P

Explanation:

The power produced by a force is given by the equation

P=\frac{W}{T}

where

W is the work done by the force

T is the time in which the work is done

At the beginning in this problem, we have:

W = work done by the force

T = time taken

So the power produced is

P=\frac{W}{T}

Later, the force does six times more work, so the work done now is

W'=6W

And this work is done in half the time, so the new time is

T'=\frac{T}{2}

Substituting into the equation of the power, we find the new power produced:

P'=\frac{W'}{T'}=\frac{6W}{T/2}=12\frac{W}{T}=12P

So, 12 times more power.

4 0
3 years ago
You walk from your bedroom, 25m to the mailbox, and then walk 25m back to your bedroom. What is your total distance? What is you
Yuki888 [10]

Answer:

Distance is 50m

Displacement is 0m

Explanation:

Distance is based on the amount of length you covered, regardless of where you end.

Displacement only considered where you started and where you ended, which is at the same spot in this case. Therefore, no displacement.

7 0
3 years ago
A wire of Nichrome (a nickel-chromium-iron alloy commonly used in heating elements) is 1.3 m long and 1.6 mm2 in cross-sectional
fredd [130]

Answer: 1.3 *10^6 Ω*m

Explanation: In order to explain this problem we have to use the following expression for the resistence:

R=L/(σ*A) where L and A are the length and teh area for the wire, respectively. σ is the conductivity of teh Nichrome.

Then, from mteh OHM law we have V=R*I so R=V/I=2/3.2=0.625 Ω

Finally we have:

σ=L/(R*A)=1.3/(0.625*1.6*10^-6)=1.3*10^6 Ω*m

5 0
3 years ago
The cars on an amusement-park ride travel at a constant velocity of 4.0 m/s on a circular track
lys-0071 [83]
V^2=u^2+2as
V=0
a =-u^2/2s
a=[4]^2/2[4]
a=-2m/s^2
7 0
3 years ago
Find the kinetic energy of an electron whose de broglie wavelength is 34.0 nm.
dezoksy [38]
The De Broglie wavelength of the electron is
\lambda=34.0 nm=34 \cdot 10^{-9} m
And we can use De Broglie's relationship to find its momentum:
p= \frac{h}{\lambda}= \frac{6.6 \cdot 10^{-34} Js}{34 \cdot 10^{-9} m}=1.94 \cdot 10^{-26} kg m/s

Given p=mv, with m being the electron mass and v its velocity, we can find the electron's velocity:
v= \frac{p}{m}= \frac{1.94 \cdot 10^{-26} kgm/s}{9.1 \cdot 10^{-31} kg}=  2.13 \cdot 10^4 m/s

This velocity is quite small compared to the speed of light, so the electron is non-relativistic and we can find its kinetic energy by using the non-relativistic formula:
K= \frac{1}{2}mv^2= \frac{1}{2}(9.1 \cdot 10^{-31} kg)(2.13 \cdot 10^4 m/s)^2=2.06 \cdot 10^{-22} J
3 0
3 years ago
Other questions:
  • Solar radiation is made up of light energy. Light energy can be separated by wavelength and frequency into the electromagnetic s
    5·2 answers
  • How are mechanical waves caused <br><br> please answer ASAP
    7·2 answers
  • The force that opposes the start of motion is referred to as _____.
    9·1 answer
  • a loop of area 0.100 m^2 is oriented at a 15.5 degree angle to a 0.500 T magnetic field. it rotates until it is at a 45.0 degree
    7·2 answers
  • Grade 10 My smart Physics people help me with this review question please
    7·1 answer
  • A 7.3 kg bowling ball would require how much force if you use a broom to
    10·1 answer
  • Insect A moves 5.0 m/min and insect B moves
    12·1 answer
  • A rocket that has a mass of 4000 lbm travels at 27,000 ft/sec. What is most nearly its kinetic energy
    12·1 answer
  • A baseball (m=145g) traveling 39 m/s moves a fielder's glove backward 23 cm when the ball is caught.
    8·1 answer
  • A given wave has a wavelength of 5.0 m and a frequency of 2.0 Hz. How fast is the wave moving?A.3.0 m/sB.8.0 m/sC.10 m/sD.2.5 m/
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!