The amount of matter contained in a given volume for a substance is called density. The correct answer is density.
Density is a physical property of matter that describes how much mass is present in a given volume. It is typically expressed in units such as kilograms per cubic meter (kg/m³) or grams per milliliter (g/mL).
The density of a substance is determined by its mass and volume and can be used to identify and compare different materials.
Therefore, The amount of matter contained in a given volume for a substance is called density. The correct answer is density.
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Answer:
Density
Explanation:
The amount of matter in a substance is its mass. In order to calculate the amount of matter in a given volume of a sample, you will use the density equation: density = mass/volume. ... The density of the elements are known and can be looked up in charts.
The mass of the piece of copper will be 130 kg. In the International System of Units (SI), the kilogram is the unit of mass.
Mass is a numerical measure of inertia, which is a basic feature of all matter. It is, in effect, a body of matter's resistance to a change in speed or position caused by the application of a force.
The energy absorbed as;
Hence, the mass of the piece of copper will be 130 kg.
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Answer: 90N
Explanation:
Mass of ball = 0.45 kg
Change in velocity = 20.0 m/s
Time = 0.10 seconds
Force required for change = ?
Since force refers to the change in momentum per unit time, hence
Force = Momentum / Time
i.e Force = Mass x (change in velocity / time)
Force = 0.45kg x (20.0m/s /0.10second)
= 0.45kg x (200 m/s^2)
= 90N
Thus, 90N of force was necessary for this change in velocity
Jeremy wants to buy some snacks. He walks four blocks east and two blocks south to get to the closest convience store to his house. How far away is store from his house, directly?
2)A slanted vector has a magnitude of 41 N and is at an angle of 23 degrees north of east. What are the magnitude and direction of the horizontal and vertical components of this vector?
3)A horizontal component vector has a magnitude of 11 m. If the resultant vector forms and angle with this component of 19 degrees, what is the magnitude of the resultant vector?
1) The distance of the store from the house is 4.47 blocks
2) The horizontal component of the vector is 37.7 N, the vertical component is 16.0 N
3) The magnitude of the resultant vector is 11.6 m
Explanation:
1)
Jeremy's motion is divided into two parts:
- First, a motion of 4 blocks east
- Then, a motion of 2 blocks south
Here we want to measure the distance between the initial and final position of Jeremy.
We notice that the two displacements are perpendicular to each other, so they correspond to the sides of a right triangle, of which the hypothenuse is the distance between the initial and final point. Therefore, the distance can be found by using Pythagorean's theorem:
So, 4.47 blocks.
2)
The horizontal and vertical components of the vector can be calculated as
where
v = 41 N is the magnitude of the vector
is the angle between the direction of the vector and the x-axis (which corresponds to the east direction)
Substituting numbers into the equations, we find
3)
In the previous part, we said that the horizontal component of a vector is given by
where
v is the magnitude of the vector
is the angle
In this problem we know that:
is the horizontal component
is the angle
Therefore, we can re-arrange the equation to find v, the magnitude of the resultant vector:
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3.What type of wave contains compressions and rarefactions? _____
4.What type of wave is produced when you move one end of a horizontal spring up and down?_____
5.What type of wave has a wavelength? ____
Q 1. In transverse waves the vibration is perpendicular to the direction of travel.
Q 2. In longitudinal waves the vibration is parallel to the direction of travel.
Q 3. Longitudinal waves contain compressions and rarefactions when they travel around.
Q 4. A transverse wave is produced when you move one end of a
horizontal spring up and down.
Q 5. Every type of wave has a wavelength.