All categories

2 years ago

A student determines that a sample has a mass of 157.2 g and a volume of 20 cm^3. Which

Physics

1 answer:

maxonik [38]2 years ago

3 0

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

linkcutter.ga/gyko

You might be interested in

I drop an egg from a certain distance and it takes 3.74 seconds to reach the ground. How high up was the egg?

OverLord2011 [107]

Answer:

68.5 meters

Explanation:

Given:

v₀ = 0 m/s

a = 9.8 m/s²

t = 3.74 s

Find: Δy

Δy = v₀ t + ½ at²

Δy = (0) (3.74) + ½ (9.8) (3.74)²

Δy = 68.5

The egg fell 68.5 meters.

7 0

3 years ago

When it goes through a chemical change, a substance changes what

Anestetic [448]

Answer:

form

I'm pretty sure...

let me know if I'm right, if I am give brainliest

8 0

3 years ago

Which two statements describe force?

Len [333]

Answer:

I think its C and D

Explanation:Force is like a energy that moves stuff. :)

6 0

2 years ago

The voltage ???? in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance ???? is slowly inc

zimovet [89]

Answer:

The change in current at $R =456 \Omega$ is $\frac{dI}{dt} = 7.032 * 10^{-5} A/s$

Explanation:

From the question we are told that

The resistance is $R = 465 \Omega$

The current is $I = 0.09A$

The change in voltage with respect to time is $\frac{dV}{dt} = - 0.03 V/s$

The change in resistance with time is $\frac{dR}{dt} = 0.03 \Omega /s$

According to ohm's law

$V = IR$

differentiating with respect to time using chain rule

$\frac{dV}{dt} = I \frac{dR}{dt} + R * \frac{dI}{dt}$

substituting value at R = 456

$-0.0327 = 0.09 * 0.03 + 456* \frac{dI}{dt}$

$\frac{dI}{dt} = 7.032 * 10^{-5} A/s$

6 0

2 years ago

How can you give a baloon an electric charge

vodka [1.7K]

When one object is rubbed against another, static electricity can be created. This is because the rubbing creates a negative charge that is carried by electrons.

5 0

3 years ago