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vredina [299]
3 years ago
11

What is chemical

Physics
1 answer:
Marat540 [252]3 years ago
5 0

Answer:

D

Explanation:

chemical energy is the energy stored in the bonds between atoms and molecules.

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Which of the following explains why parallax is used to measure stars?
enyata [817]

D, it provides greater accuracy for measuring stars far from the earth.

7 0
3 years ago
Read 2 more answers
Plz help
slamgirl [31]

Answer:

Force,friction,inertia and momentum

Explanation:

The speed that the marble is moving at can be determined by the amount of force used when pushed or pulled and what kind of surface it's on.Momentum is also a factor because of the mass of the marbles.

6 0
3 years ago
An arrow is shot vertically upward at a rate of 250ft/s. Use the projectile formula h=−16t2+v0t to determine at what time(s), in
SIZIF [17.4K]

Answer:

The arrow is at a height of 500 feet at time t = 2.35 seconds.

Explanation:

It is given that,

An arrow is shot vertically upward at a rate of 250 ft/s, v₀ = 250 ft/s

The projectile formula is given by :

h=-16t^2+v_ot

We need to find the time(s), in seconds, the arrow is at a height of 500 ft. So,

-16t^2+250t=500

On solving the above quadratic equation, we get the value of t as, t = 2.35 seconds

So, the arrow is at a height of 500 feet at time t = 2.35 seconds. Hence, this is the required solution.

6 0
4 years ago
Read 2 more answers
Joules constant, 4.1868 J/cal, is an equivalence relation for 4.1868 Joules of work for 1 calorie of heat delivered to a substan
Llana [10]

Answer:

The final answer is 6.1 BTU = 6.5621*103 KJ

Explanation:

1 BTU= 252 cal\\1 BTU =252 × 4.2 kJ\\6.1 BTU = 252 × 6.1×4.2 kJ                = 6562.08 kJ\\                = 6.5621 × 103 kJ\\

Hence, 6.1 BTU = 6.5621 × 103 kJ

7 0
3 years ago
When 180 joules of work is done to push a box horizontally 15.3 meters, how much
AnnZ [28]

Answer:

11.76Newtons

Explanation:

Workdone = Force * distance

Given

Workdone = 180joules

Distance = 15.3 metres

Required

Force

From the formula;

Force - Work/distance

Force = 180/15.3

Force = 11.76Newtons

Hence the required force is 11.76Newtons

5 0
3 years ago
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