Anyone knows what this is?
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What is a statement that summarizes a pattern found in nature? A. a scientific law B. a fact C. a scientific theory D. a hypothesis
I have three questions. John has to hit a bottle with a ball to win a prize. He throws a 0.4 kg ball with a velocity of 18 m/s. It hits a 0.2 kg bottle, and the bottle flies forward at 25 m/s. How fast is the ball traveling after hitting the bottle? 2. Someone fires a 0.04 kg bullet at a block of wood that has a mass of 0.5 kg. (The block of woof is sitting on a frictionless surface, so it moves freely when the bullet hits it). The wood block is initially at rest. The bullet is traveling 300 m/s when it hits the wood block and sticks inside it. Now the bullet and the woof block move together as one object. How fast are they traveling? 3. A big league hitter attacks a fastball. The ball has a mass of 0.16 kg. It is pitched at 38 m/s. After the player hits the ball, it is now traveling 44 m/s in the opposite direction. The impact lasted 0.002 seconds. How big of a force did the ballplayer put on that ball?
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As the particles in a soup reach the boiling point what do you expect to happen
substitution with units.]
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Answer:
Energy of photon,
Explanation:
It is given that,
Wavelength of photon,
It strikes a mercury atom in the ground state. We have to find the energy of this photon. It can be calculated using below relation as :
Where
h is the Planck's constant
c is the speed of light
So,
Hence, the above value is the energy of this photon.
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for earth , it is 11.2 km/sec
Collect five pieces of wax of different colors.
Use a plastic knife to scrape off thin shavings of the pieces of wax.
Pile the wax shavings of different colors one over the other.
Hold the pile of wax shavings in the palm and squeeze it for two to three minutes. Fold the pile and squeeze it in the palm again for a minute.
What does the student's experiment most likely demonstrate about the rock cycle?
a. Weathering can change igneous rocks into sediments.
b. Weathering can change metamorphic rocks into sediments.
c. Heat and pressure can change igneous rocks into metamorphic rocks.
d. Heat and pressure can change sedimentary rocks into metamorphic rocks.
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Then the student folded his/her palm and squeezed the layers of wax. This means that the student applied heat and pressure on the wax (sedimentary rocks)
Referring to the diagram below which represents the rock cycle, we will find that applying heat and pressure on sedimentary rocks would convert these rocks into metamorphic rocks.
Based on the above, the best choice would be:
d. Heat and pressure can change sedimentary rocks into metamorphic rocks.
24.7 mL = _____ cm3
247
2470
2.47
24.7
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24.7.....................................
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As it was categorized in the physics category it must be the mechanical power.
Power is basically the amount of work done per unit time or in simpler words the amount of energy transferred per unit time.
The SI unit for power is Watt. Which is basically J/s or Nm/s as wor has the unit of Nm.
In electrical components power can also be categorized as the amount voltage supplied multiplied by the current passed through the component.
Since you put your question in the <Physics> category, I'll assume
you're talking about mechanical or electrical power, and not political
or military power etc.
Power is the rate of doing work or moving energy from one place
to another.
In mechanical contraptions, Work is (force) x (distance) ,
so
Power = (work) divided by (time)
or = (force) x (distance) divided by (time).
In electrical circuits,
Power = (voltage) x (current)
or = (current)² x (resistance)
or = (voltage)² divided by (resistance) .
(Just use the formula with whatever quantities you know.)
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Answer:
make use of a semi-formal letter