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ASHA 777 [7]
4 years ago
6

By which method does heat travel from the sun to Earth? A. Conduction B. Convection C. Evaporation D. Radiation

Physics
2 answers:
qaws [65]4 years ago
7 0

Answer:

radiation

Explanation:

allsm [11]4 years ago
6 0

Answer:

D

Explanation:

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A ball of mass 0.6 kg flies through the air at low speed, so that air resistance is negligible. What is the net force acting on
Anettt [7]

To solve this problem we will apply Newton's second law. The second law says that mass by acceleration is equivalent to the Force exerted on a body. Mathematically this

F = ma

Here,

m = mass

a = Acceleration

The ball flies through the air under the effect of gravity only. Therefore the acceleration is due to gravity, we have that

a = - g

Then,

F = -mg

Replacing

F = -0.6*9.8

F = -5.88N

The negative sign implies that the force acting on the ball is in the downward direction that is towards the negative y direction.

5 0
3 years ago
A hockey puck moving at 28 m/s is caught by an 80,00 kg man who was at
zimovet [89]

Answer:

A

Explanation:

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8 0
4 years ago
White light is spread out into its spectral components by a diffraction grating. If the grating has 1,970 grooves per centimeter
OlgaM077 [116]

Answer;

7.238°

Explanation

From question we know that the grating has 1,970 grooves per centimeter, we can convert to from (cm) to (nm) for unit consistency

The slit separation is expressed below

d=1cm/1970

d=0.0005076

=5076nm

Then the angle (in degrees) that the red light of wavelength 640 nm appear in first order can be calculated using expression below

Sin(x)= mλ/d

Where λ= wavelength=640 nm

d=slit separation

Sin(x)= mλ/d

Sin(x)=(1×640)/5076

=0.126

sin-1(0.126)

X= 7.238°

Therefore,the angle (in degrees) that the red light of wavelength 640 nm appear in first order is 7.238°

5 0
3 years ago
Jack has two boxes: one is 148g and one is 78g. if jack pushes both boxes with the same amount of force which will accelerate fa
kifflom [539]
1) A The 78g
2) C Push on the wagon in the opposite direction as Jack with a force that is the same as Jack is applying.
5 0
3 years ago
How does a mathematical model help you understand the science concepts? Give an example.
sveta [45]
Usually describes a system by a set of variables in a set of equations established relationships between the variables and variables maybe of many types real or integer numbers Boolean values of strings for example
4 0
3 years ago
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