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Lilit [14]
3 years ago
8

PHYSICAL SCIENCE

Physics
2 answers:
omeli [17]3 years ago
7 0

Answer:

Option D

Explanation:

Taking 2020 unit test for edu right now.

Nadya [2.5K]3 years ago
7 0

Answer:

D

Explanation:

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Match the following terms.
Zarrin [17]
1- A calculation that determines how much greenhouse has an individual generates
2-physical processes in chemical reactions that move carbon through the biosphere and geosphere
3-and overall increase in the worlds temperatures attributed to increased concentrations of greenhouse gases
4-components of air mixture that trap infrared energy
5- rain water that has a pH lower than normal

I think this is right,
7 0
3 years ago
Technician A says that power is the rate that energy is stored. Technician B says that power refers to the rate that energy is t
Alex777 [14]

Answer:

C. Both technicians A and B

Explanation:

From the physical definition, power is defined as the rate of a body doing work. It is expressed as  

                                     P = w/t    watts

Where  

                       w - is the work done or the energy of the system in joules

                        t - time

The unit of power is represented in watts.

Whenever there is a rate of change of energy in the system, it accounts for the efficiency of the power of the system.

Hence, the statements of both technicians are correct.

7 0
3 years ago
I throw a football in the x direction with a fore of 124N. The football is 4 kilograms. The football accelerated for 5 seconds.
castortr0y [4]

31 (unit)

acceleration formula

                             net force (124)

     Acceleration = -------------

                                mass     (4)

124÷4=31

6 0
3 years ago
Which energy depends the arbitrarily assigned zero level
Serga [27]

Potential energy does.

A book on the floor has negative potential energy relative to the seat
of your chair, zero potential energy relative to the floor, and a whole
bunch of positive potential energy relative to the ground if the floor
is the floor of the passenger jet in which you are cruising and dropped
your book on the floor.

8 0
3 years ago
How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and
aev [14]

Answer:

h= 46.66 m

Explanation:

Given that

Initial speed of the car ,u = 110 km/h

We know that

1 km/h= 0.277 m/s

u= 30.55 m/s

lets height gain by car is h.

The final speed of the car will be zero at height h.

v²=u²- 2 g h

v= 0 m/s

0²=30.55²- 2 x 10 x h           ( g = 10 m/s²)

h= 46.66 m

4 0
3 years ago
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