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ololo11 [35]
3 years ago
12

Endothermic reactions give off heat as they proceed. a. True b. False

Physics
1 answer:
Temka [501]3 years ago
5 0
B. False
Endothermic reactions absorb heat.
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If a positive test charge is placed in an electric field, what is the direction of the force on the test charge?
svetlana [45]

Explanation:

If a positive test charge is placed in an electric field, it will exert the force in the test charge in the direction of electric field vector. We know that the direction of electric field is given by electric field lines. The field lines for a positive charge is outwards. The electric force acting on the charge is given by :

F = q E

Hence, this is the required solution.

6 0
3 years ago
Calculate the mass of air in a room 5 m by 4 m by 3 m the density of air is 1.3 kg/m3
prohojiy [21]

Answer:

Explanation:

density (d) = 1.3 kg/m³

volume of the room (v)

= 5 m * 4m * 3 m

= 60 m³

mass(m) =?

now we know density is defined as mass per unit volume so

d = m / v

1.3 = m / 60

m = 78 kg

3 0
3 years ago
Which structural damage could be expected if a Category 3 hurricane is predicted to hit an area?(1 point)
Sphinxa [80]

The structural damage which could be expected if a Category 3 hurricane which is predicted to hit an area is high percentage of framed homes could be destroyed, with total roof failure and wall collapse and is denoted as option C.

<h3>What is Hurricane?</h3>

This refers to the rapidly rotating storm which has a low-pressure center and is characterized by strong winds ad thunderstorms and of different types such as category 1 to 3.

Category 3 hurricane leads to loss of lives and properties which is depicted as  framed homes being destroyed with total roof failure and wall collapse which is why option C was chosen.

Read more about Hurricane here brainly.com/question/2835662

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8 0
2 years ago
Which describes what happens when fuel is ignited in a heat engine?
statuscvo [17]
Thermal energy is converted to chemical energy.
8 0
3 years ago
Read 2 more answers
Lauren is comparing rocks from two different locations. She has the following
telo118 [61]

Answer:

the same type because they both formed from rock material.

Explanation:

4 0
3 years ago
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