It is called a Sea Stack.
0.9 m/s
B.
110 m/s
C.
110 m/s²
D.
1.1 m/s²
Answer
Average accleration is 1.1 m/s² .
Option (D) is correct .
Explanation:
Formula
As given
An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds.
Putting all the values in the formula
Average accleration = 1.1 meter per second²
Therefore Average accleration is 1.1 m/s² .
Option (D) is correct .
A horizontal line on a position-time graph represents a stationary object or, in this case, a parked car. The car is not moving since there's no change in position over time. Speed or velocity would be depicted by the slope of the line on the position-time graph.
Your question pertains to understanding what a horizontal line on a position-time graph indicates about a car's motion. In the context of a position-time graph, a horizontal line suggests that the position of the car is not changing with respect to time, indicating option A: The car is not moving. The car being stationary means there is no change in position over time, hence the horizontal line on the graph.
Options B, C, and D suggest a change in position over time, which would be represented by a slanted line, not a horizontal one. Option B: 'moving at a constant speed' and Option C: 'moving at a constant velocity' would both produce a straight line with a slope, not a horizontal line. Option D: 'speeding up' would be represented by a curved line, showing acceleration.
In contrast, a stationary object or a car at rest is represented by a horizontal line on a position-time graph. Velocity or speed, on the other hand, is determined by the slope of the line on a position-time graph. Hence, a horizontal line, having no slope, signifies zero speed or velocity, indicating that the car is not moving.
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b. Rubber tape
c. Cotton tape
d. Plastic tape
Answer:
Explanation:
the answer is rubber tape not friction tape
B) because electromagnetic waves transmit energy without compressing the particles of the medium
C) because electromagnetic waves generate their own particles for compression and use these for movement
D) because electromagnetic waves move in two-dimensional space, the particles of mediums exist in 3-D space
Answer:
B) because electromagnetic waves transmit energy without compressing the particles of the medium
Explanation:
Electromagnetic waves are the combination of electric and magnetic field which will oscillate perpendicular to each other. And the propagation of wave here is perpendicular to both electric and magnetic field.
So here in this type of wave propagation we do not require any medium as this is propagation of electric and magnetic field.
So here no need of compression or rarefaction of medium molecules and hence it do not need any medium to travel
so here correct answer is
B) because electromagnetic waves transmit energy without compressing the particles of the medium