Show work clearly and completely (including formulas, calculations, units, etc. as done in class.)
The problem states that the ball is thrown 20 meters downrange. Since the ball is thrown horizontally, we can assume that the initial vertical velocity is zero. The only force acting on the ball is gravity, which causes it to accelerate downwards at a rate of 9.8 m/s² 1.
To calculate the pitching speed, we need to find the time it takes for the ball to travel 20 meters horizontally. Unfortunately, this information is not provided in the problem statement. Therefore, we cannot calculate the pitching speed.
B. Mars
C. the Milky Way
D. Venus
If the density of ice is 0.92 grams / centimeters³. An ice sculptor orders a one cubic meter block of ice then the mass of the ice block would be 920000 grams.
It can be defined as the mass of any object or body per unit volume of the particular object or body.
As given in the problem If the density of ice is 0.92 grams / centimeters³. An ice sculptor orders a one cubic meter block of ice then the mass of the ice block, then we have to find the mass of the ice block,
1 meter³ = 10⁶ centimeter³
The mass of the ice block = density of the ice × volume of the ice
=0.92 grams / centimeters³×10⁶ centimeter³
=920000 grams
Thus, the mass of the ice block would be 920000 grams or 920 kilograms.
To learn more about density from here, refer to the link given below;
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K = 9.00 × 109 N ×
r = 3.0 m, determine F.
_____ N
The force is obtained from the charges Q₁ = 3×10⁻⁵ C and Q₂ = 4×10⁻⁵ C and distance r = 3 m is 1.2 N.
Coloumb's law is defined as the force of attraction and repulsion between two charges is directly proportional to the product of charges and inversely proportional to the square of the distance between them.
The attractive and repulsive force, F∝ (q₁×q₂) / r². It is also known as F = k (q₁×q₂) / r², where k is the proportional constant. The unit of force is newton N.
From the given,
Q₁ = 3×10⁻⁵ C
Q₂ = 4×10⁻⁵ C
r = 3m
k = 9×10⁹ Nm²C⁻²
The attractive and repulsive force,
F = k (q₁×q₂) / r²
= (9×10⁹× 3×10⁻⁵×4×10⁻⁵) / (3)²
= 12×10⁻¹
= 1.2 N
Force = 1.2 N
Thus, the force of repulsion and attraction of given charges is 1.2 N.
To know more about Coloumb's law:
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Answer:
Crest to the lowest point on the wave trough
Explanation:
The amplitude of the wave is the height of wave as measured from the highest point on the wave that is known as peak or crest to the lowest point on the wave known as trough. Wave length refers to the length of wave from one peak to another but amplitude or height can be determine by measuring the distance from its crest to its trough.
The amplitude of a wave is the maximum distance, or 'height', from the equilibrium position to the crest (highest point) or trough (lowest point) of the wave. This represents maximum displacement of the wave from its rest position.
The amplitude of a wave refers to the distance from the equilibrium or midpoint of the wave (the rest position) to the highest point of the wave known as the crest, or to the lowest point known as the trough. For instance, considering a wave on a graph representing a sound wave, the crest would be the highest peak on the graph and the trough would be the lowest point. We can visually represent this extent as height, but it's actually a measurement of maximum displacement of the wave from equilibrium (rest position). For physical waves, such as sound or light waves, a larger amplitude leads to a louder sound or a brighter light.
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