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Marrrta [24]
3 years ago
10

12. A rolling ball has 18 J of kinetic energy and is rolling 3.0 m/s. Find its mass.

Physics
1 answer:
aleksandr82 [10.1K]3 years ago
8 0

Answer:

4g

I hope it will be useful.

Explanation:

KE = (1/2)*m*v^2

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The climate of a town on the coast will have less dramatic changes than a town further inland. Is this statement true or false?
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ture

Explanation:

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3 years ago
A 70.0 kg ice hockey goalie, originally at rest, has a 0.110 kg hockey puck slapped at him at a velocity of 31.5 m/s. Suppose th
NISA [10]

Answer

given,

mass of the goalie(m₁) = 70 kg

mass of the puck (m₂)= 0.11 kg

velocity of the puck = 31.5 m/s

elastic collision

v_1=\dfrac{m_2-m_1}{m_1+m_2}v_1+\dfrac{2m_2}{m_1+m_2}v_2

v_{pf}=\dfrac{0.11-70}{0.11+70}31.5+\dfrac{2m_2}{m_1+m_2}\times (0)

v_{pf}=-31.4\ m/s

v'_2 = \dfrac{2m_1v_1}{m_1+m_2}-\dfrac{(m_2-m_1)v_2}{m_2+m_1}

v_{gf} = \dfrac{2\times 0.11\times 31.5}{0.11+70}-\dfrac{(0.11-70)\times 0}{m_1+m_2}

v_{gf} = \dfrac{2\times 0.11\times 31.5}{0.11+70}

v_{gf} = 0.0988\ m/s

4 0
3 years ago
The USDA recommends that women consume about 2000 Calories per day and men consume about 2500 Calories per day. How much average
professor190 [17]

Answer:

   1500 W to 2200 W

Explanation:

Every person does work in his daily day to day life. A person needs energy in order to perform work. And the energy consumed by an individual while performing a daily work is directly responsible to the mount of oxygen consumed by the person.

The USDA is the federal agency which looks after the food and agriculture matters of the US government. It deals with and formulates different policies and laws for the country and it s people. It recommends about 2000 calories per day for women and for men it recommends about 2500 calorie per days of food intake.

Accordingly, the average power required by a human body for doing regular work is in the range of 1500 W to 2200 W.

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3 years ago
The speedometer of a car moving to the east reads 100 km/h. It
Natali5045456 [20]

Answer:

if they move to their respective sides at the same time then they are moving at exactly the same velocity

so that means they have the same speed and velocity

Explanation:

Pls, mark me as brainliest. Pls be the first person to do so

7 0
4 years ago
Read 2 more answers
What would you get if you split a bar magnet in the middle?
ipn [44]

Answer:

I believe it's the first option

5 0
3 years ago
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