All categories

3 years ago

The nucleus of an atom is

2 answers:

7 0

The nucleus of an atom is:
B. positively charged and has a high density

It is composed of protons (+) and neutrons (no charge). These two have a very high density and make up nearly all the mass of any substance.

Alexxx [7]3 years ago

5 0

<span>The nucleus of an atom
A. Negatively charged and low density
B. Negatively charged and a high density
C. Positively charged and a low density
D. Positively charged and a high density</span>

You might be interested in

List four energy resources

Nuetrik [128]

Answer:

Nuclear

Solar

Wind

Hydro

Geo-Thermal

6 0

3 years ago

Read 2 more answers

What describes a change in velocity?

siniylev [52]

Acceleration can be described as changes in speed, changes in direction, or changes in both. Acceleration is a vector.

4 0

3 years ago

Read 2 more answers

Coal is a fossil fuel which is used to produce electricity. Which of these statements best describes an outcome of coal mining o

Mumz [18]

It becomes rich in minerals

7 0

3 years ago

Read 2 more answers

1) The temperature inside my refrigerator is about 40 Celsius. If I place a balloon in my fridge that initially has a temperatur

viva [34]

Answer: The volume of the balloon when it is fully cooled by my refrigerator is 0.3 L

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=0.5L\\T_1=220^oC=(220+273)K=493K\\V_2=?\\T_2=40^oC=(40+273)K=313K$

Putting values in above equation, we get:

$\frac{0.5}{493}=\frac{V_2}{313}\\\\V_2=0.3$

Thus the volume of the balloon when it is fully cooled by my refrigerator is 0.3 L

4 0

3 years ago

What is callibration of temperature

Mademuasel [1]

ouch that hurts

What is Temperature Calibration? Temperature calibration refers to the calibration of any device used in a system that measures temperature. Most importantly, this usually means the temperature sensor, itself, which is typically a platinum resistance thermometer (PRT or PT-100), thermistor, or thermocouple.

3 0

3 years ago