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Verdich [7]
1 year ago
8

At a given instant of time, a car and a truck are traveling side by side in adjacent lanes of a highway. The car has a greater v

elocity than the truck. Does the car necessarily have a greater acceleration? Explain.
Physics
1 answer:
miv72 [106K]1 year ago
8 0

Answer:

NO.

Explanation:

No, It does not mean that the acceleration of the car will be higher.

The car and the truck are moving in the same direction but may have any value of acceleration. Higher velocity of car cannot imply higher acceleration. Acceleration is change in velocity to the change in time. Even if the velocity of car is higher it does not mean its change in velocity will be higher.

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Global Precipitation Measurement (GPM) is a tool scientists use to forecast weather. Which statements describe GPM? Select three
lyudmila [28]

Answer:

B.It is a satellite that collects data about rain and snow

C.Its orbit covers 90 percent of Earth’s surface

F.The sensors measure microwaves

5 0
1 year ago
A power station burns 75 kilograms of coal per second. Each kg of coal contains 27 million joules of energy.
Kaylis [27]

Answer:

Explanation:

a )

one kg of coal gives energy of 27 x 10⁶ J

75 kg of coal gives energy of 27 x 10⁶ x 75 J

So rate which energy is coming out of coal per second

= 27 x 10⁶ x 75 J

= 2025 x 10⁶ J /s

2025 million watts .

b ) energy output = 800 million watts

efficiency = (800 / 2025) x 100

= 39.5 % .

3 0
1 year ago
Suppose that the current in the solenoid is i(t. within the solenoid, but far from its ends, what is the magnetic field b(t due
Mkey [24]
The answer is B(t) = constants x I(t)

Please take precaution on the point that it is an independent field of its radial position, if the point is measured well in the solenoid. (also the radial position is the axis of its symmetry)
7 0
1 year ago
Read 2 more answers
A person wants to lose weight by "pumping iron". The person lifts an 80 kg weight 1 meter. How many times must this weight be li
statuscvo [17]

Answer:

37357 sec  

or 622 min

or 10.4 hrs

Explanation:

GIVEN DATA:

Lifting weight 80 kg

1 cal = 4184 J

from information given in question we have

one lb fat consist of 3500 calories = 3500 x 4184 J

= 14.644 x 10^6 J  

Energy burns in 1 lift = m g h

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lifts required = \frac{(14.644 x 10^6)}{784}

                      = 18679

from the question,

1 lift in 2 sec.

so, total time = 18679 x 2 = 37357 sec  

or 622 min

or 10.4 hrs

3 0
1 year ago
How do you do projectile motion problems
PtichkaEL [24]
The key  projectile motion is that gravity allows downward only
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2 years ago
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