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Naily [24]
4 years ago
10

Jennifers bowling ball is dropped from rest. Janets bowling ball is thrown horizontally at the same time. After the balls are re

leased, is the acceleration of Jennifers bowling ball greater than, less than or equal to the acceleration of Janets bowling ball? Explain.
Physics
2 answers:
Pachacha [2.7K]4 years ago
8 0
They both have a constant acceleration of g (9.8 m/s) So they both have equal accelerations. This is according to the law of gravity 
lana66690 [7]4 years ago
7 0

Answer:

The acceleration of Jennifer’s bowling ball is equal to the acceleration of Janet’s bowling ball

Explanation:

Sometime around 1590, Galileo conducted a remarkable experiment by dropping two metal balls of equal density with different mass.

He found that gravity acts equally on all objects.

The acceleration due to gravity is a constant and is directed downward, regardless of the initial direction of the object.

So, the acceleration of Jennifer’s bowling ball is equal to the acceleration of Janet’s bowling ball.

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In metals, some electrons from the outer shells of atoms are shared with other atoms, with the result that electrons can freely
Kazeer [188]
<h2>Answer:Option F</h2>

Explanation:

Metals have few number of electrons in their valence shell.

The force with which the nucleus of the metal atom is pulling the electron towards itself is lower on the valence shell because the distance between the nucleus an valence shell is large.

So,there are a lot of free electrons in metals.

When the ends of metals are at different potential,electrons flow from one end to another to balance the potential.This feature of metals allows them to conduct electricity.

Similarly,when the ends of metals are at different temperatures,conduction will take place and electrons are the carriers of conduction.This feature of metals allows them to conduct heat.

So,metals are good conductors of heat and electricity.

4 0
4 years ago
What is the critical angle of light traveling from benzene (n=1.501) into air?
Taya2010 [7]
The critical angle formula should be: sin^-1(1/n) 

 where "n" is 1.501 into the air

<span>The critical angle of light travelling from benzene, happens because the larger angles of incidence from the inside of the benzene has experienced the total internal reflection. </span>


4 0
4 years ago
1. A 2000kg truck at rest accelerates to 45m/s in 7 seconds. What is its change in kinetic energy?
Gemiola [76]

Answer:

2025000 J

Explanation:

The formula for kinetic energy is KE=.5(m)(v²).  

The initial kinetic energy is 0 because it is at rest.  .5(m)(0) = 0.

To calculate the final kinetic energy, use the kinetic energy equation. KE = .5(2000)(45²) = 2025000 J.

To find the change in kinetic energy, you do KE(f) - KE(i).  2025000-0 = 2025000 J.

5 0
4 years ago
What characteristics of EM waves did you discover?
jarptica [38.1K]

The characteristics of electromagnetic waves typically represent as follows:

  • There are changes in the electric and magnetic fields simultaneously so that both fields have maximum and minimum values ​​at the same time and place.
  • The direction of the electric field and the magnetic field are perpendicular to each other. The direction of both is perpendicular to the direction of the wave propagation.
  • The shape of electromagnetic waves is transverse waves.
  • It has general wave characteristics like polarization, reflection, refraction, interference, and diffraction.
  • The amount of the electric field (E) is directly proportional to the magnitude of the magnetic field, with the relationship E = cB.
  • The universal constant of the velocity of electromagnetic waves in a vacuum is \boxed{ \ c = 3 \times 10^8 \ m/s. \ }
  • The speed at which electromagnetic waves propagate depends merely on the electrical and magnetic properties of the medium that it travels on.
  • Because electromagnetic waves do not contain an electric charge, they do not experience any possible deviation in the electric or magnetic fields.
<h3>Further explanation</h3>
  • Two physicists who contributed significantly to developing the concept of electromagnetic waves are Faraday and Maxwell around 1831-1864.
  • From the observations, Faraday suggested that changes in the magnetic field cause an electric charge to flow in the loop of wire, contributing in the emergence of an electric field.
  • Maxwell proposed a reverse process, which is a change in the electric field will generate a magnetic field.
  • As follows, according to Faraday's Law, changes in sinusoidal magnetic fields generate electric fields which also change sinusoidally.
  • Meantime, according to Maxwell's Hypothesis, changes in sinusoidal electric fields generate magnetic fields which also change sinusoidally.
  • Furthermore, there is a process of combining electric and magnetic fields that propagate in all directions called electromagnetic waves.
<h3>Learn more </h3>
  1. About vector components brainly.com/question/1600633
  2. Determine the shortest wavelength in electron transition brainly.com/question/4986277
  3. Particle's speed and direction of motion brainly.com/question/2814900

Keywords: the characteristics, electromagnetic waves, transverse, vacuum, electric fields, magnetic, perpendicular, propagation, Maxwell, Faraday, the speed, polarization, reflection, refraction, interference, and diffraction

4 0
4 years ago
Read 2 more answers
An object is realsed From rest . how far does it fall during the second second of fall?​
Savatey [412]

Answer:

14.715 m

Explanation:

Assume that the acceleration due to gravity is 9.81 m/s^2 downwards, take downwards as positive

First second:

v = u + at

v = 9.81 m/s

Second second:

s = ut + (1/2)at^2

s = 9.81(1) + (1/2)(9.81)(1)^2

s = 14.715 m

6 0
3 years ago
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