When Jenny writes, the pencil exerts a force of 5n on the paper. The area of the contact is 0.5mm square. Calculate the pressure.
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Related Questions
A constant force is applied to an object, causing the object to accelerate at 10 m/s^2. What will the acceleration be if: a) The force is halved? b) The object's mass is halved? c) The force and the object's mass are both halved?
Natalia is walking to an apartment at 0.5 m/s. She walks 40 m to her door. How long did Natalia walk?
When baking soda and vinegar react, the product includes bubbles. What has most likely occurred? would it be a gas formation, exothermic reaction or precipitate formtion
The energy derived from the digestion of food is __________.a. kinetic energy b. inertia c. momentum d. chemical energy
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Answer:
.17Hz
Explanation:
The formula for frequency is f= 1/T , where T is the period.
f = 1/6 and 1/6 ≈ .17
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Answer:
C. work function
Explanation:
In the photoelectric effect, the energy of the incident photon is used in part to extract the electron from the metal (and this energy is called work function) and the rest is converted into kinetic energy of the electron. In formula:
where
hf is the energy of the incident photon, which is the product between h (the Planck constant) and f (the photon's frequency)
is the work function
K is the kinetic energy of the photoelectron as it leaves the material
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OK instead of telling us what you don't know, it would actually be much more helpful if we could talk about what you DO know.
What is it a graph of ?
-- Impulse is (force applied) x (time the force persists).
Is there force or time anywhere on the graph ?
Is there acceleration anywhere on the graph, and do you know the mass ?
With acceleration and mass, you could calculate the force.
-- Impulse is also the change in momentum.
Is there momentum anywhere on the graph ?
Is there speed anywhere on the graph, and do you know the mass ?
With speed and mass, you can calculate the momentum.
We can use what you know to solve the problem. But we cannot use
what you don't know to solve the problem.
I just had the coolest idea: What if you took a picture of the Physics gragh
that you're doing, and post it here along with your question ? ! Then we
would have the same information that you have, and we could show you
how to use it.
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Answer:
D. A negative externality.
Explanation:
Particulate pollution is a form of pollution that is responsible for the degradation of the environment.
Particulate matter is also referred to as particle pollution or atmospheric aerosol particles and it can be defined as a complex microscopic mixture of liquid droplets and solid particles that are suspended in air.
An externality is typically an unwarranted cost or benefit by a manufacturer or producer of goods and services that affects a third party.
In Economics, an externality could either be positive or negative depending on its effect on a third party.
A negative externality arises when the production or consumption of a finished product or service has negative impact (cost) on a third party.
In conclusion, air pollution is an example of a negative externality because it causes harm to a third party.