The tension in the cable that pulls the elevator upwards with an acceleration of 2.0 m/s² is 4200 N. The right option is A) 4200 N.
<h3 /><h3>What is tension?</h3>
Tension is defined as the force transmitted through a rope, string or wire when pulled by forces acting from opposite sides.
To calculate the tension in the cable, we use the formula below.
Formula:
- T = mg+ma............ Equation 1
Where:
- T = Tension in the cable
- m = Mass of the Joey and the elevator
- a = Acceleration
- g = Acceleration due to gravity
From the question,
Given:
- m = (300+60) = 360 kg
- a = 2 m/s²
- g = 9.8 m/s²
Substitute these values into equation 2
- T = (360×9.8)+(360×2)
- T = 3528+720
- T = 4248 N
- T ≈ 4200 to the nearest hundred.
Hence, the tension in the rope is 4200 N, the right option is A) 4200 N.
Learn more about tension here: brainly.com/question/24994188
#SPJ1
Answer:
Explanation:
For constructive interference of two coherent light waves at a point , the condition is as follows
path difference = n x wavelength where n is any integer like 1 , 2 , 3 , .... etc .
Given in the question , path difference of light from the two sources
= 355 - 141 = 214 m
So applying the formula above ,
214 = n x wavelength
wavelength = 214 / n
For largest value of wavelength , n should be smallest . The smallest value of n is 1 .
so ,
largest wavelength possible for constructive interference
= 214 / 1
= 214 m .
Answer:
B. has a smaller frequency
C. travels at the same speed
Explanation:
The wording of the question is a bit confusing, it should be short/long for wavelength and low/high for frequency. I assume low wavelength mean short wavelength.
All sound wave travel with the same velocity(343m/s) so wavelength doesn't influence its speed at all. It won't be faster or slower, it will have the same speed.
Velocity is a product of wavelength and frequency. So, a long-wavelength sound wave should have a lower frequency.
The option should be:
A. travels slower -->false
B. has a smaller frequency -->true
C. travels at the same speed --->true
D. has a higher frequency --->false
E. travels faster has the same frequency --->false
Adults. 18years olds and older were affected because back then only 21 years olds and older could vote but the 26th amendment changed that
Answer:
The satellite is pulling up on Earth with a force of 2000N
Explanation:
According to Newton's third law of motion, the satellite is pulling up on Earth with a force of 2000N
Newton's third law of motion states that "Action and reaction are equal and opposite".
As the earth pulls the satellite in space with an action force of gravity, based on Newton's third law of motion, a reaction force acting in an opposite direction is also in place.
This reaction force is that of the satellite.