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3 years ago

HELP ME ASAP PLEASE!!!!!!

Physics

1 answer:

dybincka [34]3 years ago

5 0

Answer:

3. Silver tarnishes when exposed to air and light

Explanation:

Physical properties are properties that change substances in ways that is visible to a human by using their senses (ie. see, touch, etc)

The rest of the answers are chemical properties, which cannot be seen with the human senses, and requires other special devices or techniques to tell.

-Vibilities

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7. Sketch a labeled history graph of a vibrating particle. Be sure to label the axis of the graph correctly, and point out

nikklg [1K]

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3 years ago

What are the 3 main states of matter in water?/

BigorU [14]

Answer:

ice (solid), water (liquid) and vapor (gas)

Explanation:

7 0

2 years ago

Read 2 more answers

An object with a mass 4.0 kg has a momentum of 64 kgm/s . How fast is the object traveling ?

Anastasy [175]

Answer:

The object will travel at the speed of 16 m/s.

Explanation:

Given

Mass m = 4.0 kg

Momentum p = 64 kgm/s

To determine

How fast is the object traveling?

<u>Important Tip:</u>

The product of the mass and velocity of an object — momentum.

Using the formula

$p = mv$

where

m = mass

v = velcity

p = momentum

Thus, in order to determine the speed of the object, all we need to do is to substitute p = 64 and m = 4 in the formula

$p = mv$

$64\:=\:4\times v$

switch the equation

$\:4\times \:v\:=64$

divide both sides by 4

$\frac{4v}{4}=\frac{64}{4}$

simplify

$v=16$ m/s

Therefore, the object will travel at the speed of 16 m/s.

3 0

2 years ago

If a spring has a spring constant of 1.00 × 10^3 N/m, what is the restoring force when the mass has been displaced 20.0 cm?

never [62]

The spring has a spring constant of 1.00 * 10^3 N/m and the mass has been displaced 20.0 cm then the restoring force is 20000 N/m.

Explanation:

When a spring is stretched or compressed its length changes by an amount x from its equilibrium length then the restoring force is exerted.

spring constant is k = 1.00 * 10^3 N/m

mass is x = 20.0 cm

According to Hooke's law, To find restoring force,

F = - kx

= - 1.00 *10 ^3 * 20.0

F = 20000 N/m

Thus, the spring has a spring constant of 1.00 * 10^3 N/m and the mass has been displaced 20.0 cm then the restoring force is 20000 N/m.

3 0

2 years ago

If NEPA charges 5k per kWh, what is the cost of

tiny-mole [99]

Answer:

24k

Explanation:

We multiply by 200V by 24

8 0

2 years ago