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Yanka [14]
3 years ago
5

Which of the following statements about infrared telescopes is NOT true?

Physics
1 answer:
nignag [31]3 years ago
4 0

Answer:

a. They are typically operated at lower temperatures.

a. They are typically operated at lower temperatures.b. They are especially helpful for viewing cool or obscured astronomical objects.

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Find the tension in the two ropes that are holding the 2.9 kg object in place. Rope 1 makes an angle of 51.3° with respect to th
Gnesinka [82]

Answer:

Explanation:

Let the tension in horizontal rope be T₁ and in the other rope be T₂ which is making angle of 51.3⁰

The vertical component of tension T₂ will balance the weight .

= T₂ cos 51.3 = 2.9 x 9.8

T₂ = 2.9 x 9.8  / cos 51.3

= 28.42 / .625

= 45.47 N

The horizontal component of T₂ will balance T₁

T₂ sin 51.3 = T₁

45.47 sin 51.3 = T₁

T₁ = 35.48 N .

8 0
3 years ago
Specialized intermodal tank container which carries refrigerated liquid gases, oxygen, or helium
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This would be a cryogenic intermodal tank. These are used to store and transport HAZMAT gases that require storage under specific pressure and temperature parameters. Cryogenic Intermodal tanks have pressure of 25 Psi or less. 
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3 years ago
How does work affect energy between objects so it can cause a change in the form of energy?
mihalych1998 [28]

Answer:

Doing work' is a way of transferring energy from one object to another, energy is transferred when a force moves through a distance.

Explanation:  So more energy, more work done bc u transferred more energy to move the object and doing the work. and if you only use a little of energy, the work done also only a little.

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3 years ago
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An electron is emitted from a nucleus- State the effect this has on the charge of the nucleus
Likurg_2 [28]

Question

An electron is emitted from a nucleus- State the effect this has on the charge of the nucleus

Answer:

an electron orbiting around the nucleus combines with a nuclear proton to produce a neutron, which remains in the nucleus, and a neutrino, which is emitted.  As in positron emission, the nuclear positive charge and hence the atomic number decreases by one unit, and the mass number remains the same.

hope this helps!!!

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3 years ago
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The acceleration of an object increases by the force applied to it and decreases based on it's mass.
xenn [34]

Explanation:

Force is defined as mass times acceleration.

Mathematically,          F = m × a

where             F = force

                       m = mass

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This shows that force is directly proportional to acceleration. So, when greater force is applied then acceleration will also increase.

Whereas acceleration is inversely proportional to mass. So, when there is increase in mass then there will be decrease in acceleration.

5 0
3 years ago
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