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Ahat [919]
4 years ago
11

In the classroom demonstration where a volunteer strikes an anvil resting on the physics professor's chest will he lies reclined

, the anvil shields the daring physics professor from most of the sledgehammer's:
a) momentum
b) kinetic energy
c)...both
d)...actually neither

PLEASE EXPLAIN!
Physics
2 answers:
Mnenie [13.5K]4 years ago
7 0
Kinetic energy because the sledge hammer is moving so it has kinetic energy.
Leni [432]4 years ago
4 0
Answer: Kinetic energy

The sledge hammer is a sledge. Meaning that the energy will be kinetic.
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Pand S waves are both
leva [86]

Answer:

3.body

Explanation:

Both P and S waves are both body waves. Body waves are waves that travels through the earth.

P and S waves are elastic seismic waves that moves within the earth. Love and Rayleigh waves are surface waves that travels through the surface.

  • P waves is also known as primary waves
  • S waves are known secondary waves.

These waves are the first set of waves to arrive a seismic station before the surface waves are picked up.

3 0
3 years ago
Potential energy is related to the speed of an object.<br><br><br> True or False
adelina 88 [10]

Answer:

False

Explanation:

Potential energy is stored energy, so it is not in motion. Kinetic energy is the energy in motion.

4 0
3 years ago
A meteorite has a speed of 90.0 m/s when 850 km above the Earth. It is falling vertically (ignore air resistance) and strikes a
Schach [20]

Before it hits the sand bed, the meteorite is accelerating uniformly with g=9.80\dfrac{\rm m}{\mathrm s^2}, so that its speed v satisfies

v^2-{v_0}^2=-2g\Delta y

where v_0=90.0\dfrac{\rm m}{\rm s} is its initial speed and \Delta y=(0-850)\,\mathrm{km}=-850\,\mathrm{km} is its change in altitude. Notice that we're taking the meteorite's starting position in the atmosphere to be the origin, and the downward direction to be negative. Now,

v^2-\left(-90.0\dfrac{\rm m}{\rm s}\right)^2=-2\left(9.80\dfrac{\rm m}{\mathrm s^2}\right)(-850,000\,\mathrm m)\implies\boxed{v=4080\dfrac{\rm m}{\rm s}}

3 0
3 years ago
When a star collapses to form a black hole, its mass _____.
romanna [79]
When a star collapses to form a black hole, its mass increases, that is letter C. One example of this is the Big Bang Theory.  
<span>
It is by no doubt that our universe had had its own starting point but how it really started became a debate for the scientists over the past centuries. From theories such as Ekpyrotic theory, White Holes, Matrix theory, and Quantum theory, the Big Bang theory is the theory mostly accepted by scientists. According to the theory, the universe started as a singularity, that is, from a black hole under extreme gravitational pressure and expanded (instead of exploded) and cooled. Its cooling, according to the theory, is still happening now as of the moment.</span>
7 0
4 years ago
Which contains the most moles: 10 g of hydrogen gas, 100 g of carbon, or 50 g of lead?
Stolb23 [73]

Answer:

Carbon

Explanation:

We know that

Number of moles = mass/molecular mass

So

Hydrogen: given as H2 with 10g an atomic number of 1 so MW( 1x 2= 2)

Number of moles = Weight/MW

= 10/2

= 5

Carbon: atomic number 12 C and mass 100

Number of moles = Weight/MW

= 100/12

= 8.33

Lead: atomic num 207 and mW 207 pb

Number of moles = Weight/MW

= 50/207

= 0.241

Therefore Carbon has the most moles.

5 0
4 years ago
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