I think it's D. Usually, to find the volume of an irregularly shaped object, you put it in water with a labeled beaker to measure how much the water rises. The balance would be used to measure the mass in grams.
To solve this problem it is necessary to apply the concepts related to energy in photons. Although these although they have no mass have energy and are defined as
Where,
c = Speed of light
h = Planck's constant
= wavelength
f= Frequency of the radiation
In addition to this we know that the maximum kinetic energy in a photon is given by the formula
Where,
Amount of energy binding the electron to the metal
can be expressed also as
Replacing the terms then we have to
Re-arrange to find
Replacing with our values,
Therefore the maximum kinetic energy is 2.49eV
<em>Note: Speed of light is converted to nanometers. </em>
Answer:Well it depends on what the heavy load is but it is mostly easy to do it with a crowbar because it gives you leverage and it is stronger.
Explanation:
Your welcome I think.
Explanation:
We know that a changing magnetic field induces a current in a conductor. For that reason a generator basically consist an element that produces a magnetic field that changes over time and a conductor where the current will be induced.
This element that produces a magnetic field can be one of the following:
- A permanent magnet: Which is basically like a regular magnet. The magnetic field that a permanent magnet produces does not change over time, we need a motor or any other external force to move the axis of the generator and cause the magnetic field to change.
- An electro-magnet. Which is basically a DC current flowing through a conductor. Basically, when current flows through a conductor it behaves exactly like a magnet. So what we commonly do, is to connect a conductor to a DC battery, and it will create a magnetic field.
Like we are using a DC battery to create a magnetic field, then the magnetic field won't change over time either. So we still need an external force to move the axis of the generator to produce AC electricity.
Answer: 5.5 mass
Explanation: The force of gravity pulling the car up the hill = 5.5