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nataly862011 [7]

4 years ago

7

Which of the following forms of light can be observed with telescopes at sea level?Select all that apply.Select all that apply.X

raysultraviolet lightvisible lightinfrared lightradio waves

1 answer:

Semenov [28]4 years ago

5 0

rays ultraviolet light visible light infrared light radio waves

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A rocket of mass M when empty carries a mass M of fuel. The rocket and fuel travel at speed v.

vekshin1

Answer:

A

Explanation:

Finding the (maximum) respective prime powers would yield the answer. Also we need not ... Is perfectly divisible by 720^n? ... So we can say that for any positive value of n it not divisible.

4 0

3 years ago

50 points if brainliest !!!!!!!!!!

Natasha_Volkova [10]

Answer:

$weight = mg \\ = 70 \times 10 \\ = 700 \: newtons$

$force = 700 \: newtons$

$force = mass \times acceleration \\ 700 = 70 \times a \\ a = 10 \: {ms}^{ - 2}$

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3 years ago

Suppose you were asked to find the torque about point p due to the normal force n in terms of given quantities. which method of

igomit [66]

Answer:

T=Lnsin $\alpha$

Please check the attached

Explanation:

The torque can simply be calculated by multiplying the length of the rod by the perpendicular force n as shown in the attached figure.

Note that sin90=1

T=Lsin $\alpha$ (nsin90)

T=Lsin $\alpha$ xn

T=Lnsin $\alpha$

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3 years ago

A sample of oxygen gas at 25.0Â°c has its pressure tripled while its volume is halved. What is the final temperature of the gas?

Marat540 [252]

Answer:

447 K

Explanation:

25 C = 25 + 273 = 298 K

Assuming ideal gas, we can apply the ideal gas law

$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$

$T_2 = T_1\frac{P_2}{P_1}\frac{V_2}{V_1}$

Since pressure is tripled, then $P_2 / P_1 = 3$ . Volume is halved, then $V_2 / V_1 = 0.5$

$T_2 = 298*3*0.5 = 447 K$

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3 years ago

Read 2 more answers

Write one general properties of non contact force

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Answer: Gravitational force between the two masses does not depend on the medium separating two masses.

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3 years ago