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Ann [662]
3 years ago
14

A hockey player uses a 400- gram stick to apply 50 newtons of force to a 170-gram puck, causing a momentum of change 5kg x m/s.

What is the impulse experienced by the hockey puck?
Physics
1 answer:
gavmur [86]3 years ago
4 0

Answer: 5 N•s

Explanation:

An impulse will result in a change of momentum.

If the momentum changed 5 kg•m/s, you can be certain that an impulse of 5 N•s has been applied.

The units for Impulse and momentum are identical

kg•m/s = N•s

if we divide each side by s

kg•m/s/s = N•s/s

kg•m/s² = N

which is probably familiar already

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Which planet has the most extreme temperature difference between day and night?
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Answer:

Explanation:

Mercury, the first planet from the Sun, endures drastic temperature changes from day to night. During the day, the planet is incredibly near to the Sun, with temperatures reaching 430°C.

4 0
2 years ago
Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth?
CaHeK987 [17]
In fact, the force Rahul exerts on Earth corresponds to the force of gravity. But Rahul's weight is, in fact, the force of gravity exerted by the Earth on Rahul, and these two forces correspond to the action-reaction pair of Newton's third law, which states that the two forces are equal.
7 0
3 years ago
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A waterbed has a force of 1300N on the floor. It exerts 347 Pa of pressure. What is the area of the waterbed?
Sergio [31]

Answer:

Pressure = Force/Area

347 = 1300/Area

Area = 1300/347

area= 3.47m2

6 0
3 years ago
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A soccer ball is kicked from the top of one building with a height of H1 = 30.2 m to another building with a height of H2 = 12.0
salantis [7]

The amount of energy lost to air friction, given the data is 37.71 J

<h3>How to obtain the initial energy</h3>
  • Initial velocity (u) = 15.1 m/s
  • Mass (m) = 450 g = 450 / 1000 = 0.45 Kg
  • Initial Energy (E₁) = ?

E₁ = ½mu²

E₁ = ½ × 0.45 × 15.1²

E₁ = 51.3 J

<h3>How to obtain the final energy</h3>
  • Final velocity (u) = 19.89 m/s
  • Mass (m) = 450 g = 450 / 1000 = 0.45 Kg
  • Final Energy (E₂) = ?

E₂ = ½mv²

E₂ = ½ × 0.45 × 19.89²

E₂ = 89.01 J

<h3>How to determine the energy lost</h3>
  • Initial Energy (E₁) = 51.3 J
  • Final Energy (E₂) = 89.01 J
  • Energy lost =?

Energy lost = E₂ - E₁

Energy lost = 89.01 - 51.3

Energy lost = 37.71 J

Learn more about energy:

brainly.com/question/10703928

#SPJ1

8 0
2 years ago
A particle of mass 2.37 kg is subject to a force that is always pointed towards East or West but whose magnitude changes sinusoi
Pavlova-9 [17]

Answer:

v(1.5)=0.7648\ m/s

Explanation:

<u>Dynamics</u>

When a particle of mass m is subject to a net force F, it moves at an acceleration given by

\displaystyle a=\frac{F}{m}

The particle has a mass of m=2.37 Kg and the force is horizontal with a variable magnitude given by

F=2cos1.1t

The variable acceleration is calculated by:

\displaystyle a=\frac{F}{m}=\frac{2cos1.1t}{2.37}

a=0.8439cos1.1t

The instant velocity is the integral of the acceleration:

\displaystyle v(t)=\int_{t_o}^{t_1}a.dt

\displaystyle v(t)=\int_{0}^{1.5}0.8439cos1.1t.dt

Integrating

\displaystyle v(1.5)=0.7672sin1.1t \left |_0^{1.5}

\displaystyle v(1.5)=0.7672(sin1.1\cdot 1.5-sin1.1\cdot 0)

\boxed{v(1.5)=0.7648\ m/s}

3 0
3 years ago
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