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inna [77]
2 years ago
15

Food that is cooked properly can no longer be contained. True or false

Physics
1 answer:
Roman55 [17]2 years ago
4 0

Answer:

true they can no longer be contained

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Brittany stands at rest on a skateboard. The combined mass of Brittany and the skateboard is 62 kg. Dave tosses a 3.7-kg pumpkin
Amiraneli [1.4K]

Answer:

3.196 m/s

Explanation:

Parameters given:

Mass of Brittany and the skateboard, M = 62 kg

Mass of pumpkin, m = 3.7 kg

Initial speed of Brittany and the skateboard, U = 0 m/s

Final velocity of Brittany, the skateboard and the pumpkin, V = v = 0.18 m/s

We can solve this problem by applying the principle of conservation of momentum.

It states that the total final momentum of a system is equal to the total initial momentum of the system.

M*U + m*u = M*V + m*v

Where u is the initial velocity of the pumpkin.

Since the final velocity of Brittany and the skateboard is equal to the final velocity of pumpkin:

M*U + m*u = (M + m) *v

Solving this to get u:

(62 * 0) + (3.7 * u) = (62 + 3.7) * 0.18

0 + 3.7u = 65.7 * 0.18

3.7u = 11.826

u = 11.826 / 3.7

u = 3.196 m/s

The initial velocity of the pumpkin was 3.196 m/s.

5 0
3 years ago
If a force of 40N is applied for 0.2 sec to change the momentum of a volleyball, what is the impulse?
Montano1993 [528]

Answer:

8ns

Explanation:

40(0.2)

=8ns

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2 years ago
A 9-volt battery is used to power two lightbulbs in a series circuit. The first light bulb has a
butalik [34]

Explanation:

Total Resistance: 3+2 = 5 ohms

V=9V

Power = V²/R

=9²/5

=81/5

=16.2 W

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2 years ago
The longer the lever, the greater the
Simora [160]

Answer: The longer the lever, the greater the force on the load will be.

Explanation:

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A device that does work with one movement and changes the size or direction of a force is a(n)
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A device that does work with one movement and changes the size or direction of a force is a simple machine.
7 0
3 years ago
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