37. Which of the following is not used in cal-

almond37 [142]

NEED HELP WITH WHAT DONT SEEQUESTION

4 0

3 years ago

If two objects are the same size but one object is 3 times hotter than the other object, the hotter object emits If two objects

Illusion [34]

Answer:

81 times the first body

Explanation:

Let the temperature of the first object is T.

The temperature of the second object is 3T.

According to the Stefan's law, the energy radiated per unit area per unit time is given by

$E \alpha T^{4}$

So, for the first body

$E_{1} \alpha T^{4}$ .... (1)

for the second body

$E_{2} \alpha (3T)^{4}$ ..... (2)

By equation (1) and (2),

E2 = 81 times E1

So, the second body gives 81 times more energy per unit area per unit time

8 0

4 years ago

A team of astronauts is on a mission to land on and explore a large asteroid. In addition to collecting samples and performing e

GenaCL600 [577]

Answer:

463.4 m/s

Explanation:

The escape velocity on the surface of a planet/asteroid is given by

$v=\sqrt{\frac{2GM}{R}}$ (1)

where

G is the gravitational constant

M is the mass of the planet/asteroid

R is the radius of the planet/asteroid

For the asteroid in this problem, we know

$\rho=4.49\cdot 10^6 g/m^3$ is the density

$V=3.32\cdot 10^{12} m^3$ is the volume

So we can find its mass:

$M=\frac{\rho}{V}=(4.49\cdot 10^6 g/m^3)(3.32\cdot 10^{12}m^3)=1.49\cdot 10^{19} kg$

Also, the asteroid is approximately spherical, so its volume is given by

$V=\frac{4}{3}\pi R^3$

where R is the radius. Solving the formula for R, we find its radius:

$R=\sqrt[3]{\frac{3V}{4\pi}}=\sqrt[3]{\frac{3(3.32\cdot 10^{12}m^3)}{4\pi}}=9256 m$

So now we can use eq.(1) to find the escape velocity:

$v=\sqrt{\frac{2(6.67\cdot 10^{-11})(1.49\cdot 10^{19}kg)}{9256 m}}=463.4 m/s$

3 0

3 years ago

Which explains how winds move?

Zolol [24]

The Answer is Winds are caused by moving from air which is from high to low pressure

4 0

3 years ago

the velocity of an object is given v(t), and the acceleration is given by a(t). what is the relationship between the total

zmey [24]

The rate at which velocity changes is called acceleration. (Attensity exists when velocity varies.) If a moving object changes speed.

Why does time accelerate the rate at which velocity changes?

A motion's acceleration is the rate at which it changes from one velocity to another. A velocity's rate of change with respect to time is referred to as its acceleration. The amount and direction of acceleration are both properties of a vector quantity.

A change in velocity is known as what?

A velocity change's acceleration is measured. Acceleration is the measure of how quickly a velocity changes with time. The acceleration measure used in SI is M/s2.

To know more about velocity visit: brainly.com/question/18084516?

#SPJ4

8 0

1 year ago