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3 years ago

6

When an object absorbs light, what usually happens to its temperature?

1 answer:

kaheart [24]3 years ago

5 0

Usually the objects temperature increases.

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What scientists do that is the basis of their investigations

matrenka [14]

<span>The "scientific method" consists of forming a hypothesis (a statement about what the researchers think is true), collecting data that might confirm or refute the hypothesis, and then examining the data to see how well or poorly they support the original hypothesis.</span>

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4 years ago

Define s.i unit of force explanation

kvv77 [185]

<h3><u>Answer</u> :</h3>

◈ As per newton's second law of motion, Force is defined as the product of mass and acceleration $.$

Mathematically,

$\dag\:\boxed{\bf{\purple{F=ma}}}$

Unit of mass : kg

Unit of acceleration : m/s²

Therefore,

Unit of force ➠ <u>kg m/s²</u>

SI unit : <u>N (newton)</u> or <u>kg m/s²</u>

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4 years ago

The force of repulsion between to like charge table tennis balls is 8.2 X 10 ^-7 N if the charge on the two objects a 6.7 X10^-9

Svetllana [295]

Answer:

0.702 m

Explanation:

The magnitude of the electrostatic force between two charged objects is given by Coulomb's Law:

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1, q2 are the two charges

r is the separation between the objects

And the force is:

- Attractive if the two charges have opposite signs (+-)

- Repulsive if the two charges have same sign (++ or --)

In this problem we have:

$F=8.2\cdot 10^{-7}N$ is the force between the two balls

$q_1 = q_2 = 6.7\cdot 10^{-9}C$ is the charge on each ball

Solving for r, we find the separation between the balls:

$r=\sqrt{\frac{kq_1 q_2}{F}}=\sqrt{\frac{(9\cdot 10^9)(6.7\cdot 10^{-9})^2}{8.2\cdot 10^{-7}}}=0.702 m$

5 0

3 years ago

Read 2 more answers

6.) What is the missing element?<br><br> a. Hydrogen<br> b. Helium<br> c. Carbon<br> d. Nitrogen

IrinaK [193]

Answer:

It's nitrogen. Specifically, this is the alpha emission of an N-15 isotope.

8 0

3 years ago

Help ASAP!!! Will give brainliest!!!

shusha [124]

Answer:

C. Ce2(so4)3

Explanation:

A gas will escape from water as the temperature increases. Solubility is the characteristic of staying dissolved in the water.

4 0

3 years ago