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krek1111 [17]
4 years ago
12

HELP PLEASE!!!!

Physics
2 answers:
Mrac [35]4 years ago
5 0
Conduction is the transfer of energy by two contacting solids.

Convection is the transfer of energy from a body to another body by a medium of a fluid (gas or liquid)

Radiation is the transfer of energy by the radiated waves of and object or an energy source
Len [333]4 years ago
3 0
Conduction: transfer through two solid items
Convection: transfer through a fluid
Radiation: transfer through electromagnetic waves
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John and Caroline go out for a drive one day. This graph represents the distance they traveled over time.
just olya [345]

Answer:from 0.75 to 1.25 hours

Explanation:

If the line goes straight, it means that time is going by but they're not moving.

6 0
3 years ago
Read 2 more answers
Beaker A contains 100 mL of water at a temperature of 25 °C. Beaker B contains 100 mL of water at a temperature of 60 °C. Which
Novosadov [1.4K]

Answer:

Only option A is correct. Beaker A has lower kinetic energy than beaker B.

Explanation:

Step 1: Data given

Beaker 1 has a volume of 100 mL at 25 °C

Beaker B has a volume of 100 mL at 60 °C

Thermal energy = m*c*T

Thermal energy beaker A = 100 grams*4.184 * 25°C

Thermal energy beaker B = 100 grams *4.184*60°C

⇒ Since both beakers contain the same amount of water, the thermal energy depends on the temperature.

Since beaker B has a higher temperature, it has a higher thermal energy than beaker A

When we heat a substance, its temperature rises and causes an increase in the kinetic energy of its constituent molecules. Temperature is, in fact, a measure of the kinetic energy of molecules.

This means beaker B has a higher kinetic energy than beaker A

Potential energy doesn't depend on temperature. this means the potential energy of beaker A and beaker B is the same.

a. Beaker A has lower kinetic energy than beaker B. This is correct.

b. Beaker A has higher thermal energy than beaker B. This is false.

c. Beaker A has higher potential energy than beaker B. This is false.

d. Beaker A has lower potential energy than beaker B. This is false

e. Beaker A has higher kinetic energy than beaker B. This is false.

3 0
3 years ago
You want to create an electric field vector E = < 0, 5 104, 0> N/C at location < 0, 0, 0>. Where would you place a p
atroni [7]

Answer:

1.696 × 10^(-7) m on the y axis.

Explanation:

We are given the electric field as;

E = < 0, 5 × 10⁴, 0> N/C

This is written in (x, y, z) co-ordinates. So it means that it lies on the y-axis.

So,

E = 5 × 10⁴ N/C in the y direction.

Formula for Electric field is;

E = kq/r²

where;

k is a constant with a value of 8.99 x 10^(9) N.m²/C²

q is charge on the proton = 1.6 × 10^(-19) C

r is the distance

Thus, making r the subject gives;

r = √(kq/E)

Plugging in the relevant values gives;

r = √(8.99 × 10^(9) × 1.6 × 10^(-19)/(5 × 10⁴))

r = 1.696 × 10^(-7) m on the y axis.

6 0
3 years ago
Please help me with this
Arturiano [62]
I can’t see the full pic
5 0
3 years ago
Read 2 more answers
Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second a
snow_lady [41]

Answer:

c

Explanation:

the first 35 to 40 acceleration will be 5 same as 40 to 45 ,

5+5=10

7 0
3 years ago
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