<em>The sensitivity of a mercury thermometer can be increased by using a smaller mercury bulb, thinner wall and smaller bore. A smaller bulb contains less mercury and hence absorbs heat in shorter time. As a result it can response faster to temperature change.</em>
Speed and tangential acceleration is zero are constant in uniform circular motion
<h3>Further explanation
</h3>
Uniform circular motion is the motion of an object in a circle at a constant speed.
An object moving in uniform circular motion is moving around the circle perimeter with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction. Wheres the the tangential component of acceleration is zero in a uniform circular motion. But its value is not zero in a non uniform circular motion.
In uniform circular motion, it is results in change of velocity (velocity has two components such as speed and direction). Because the velocity changes, the acceleration exists. The direction of acceleration in this case is radial, tangential component is zero so the speed is not varying with time. Acceleration exists because of the change in direction of particle’s velocity.
Tangential acceleration quantities are zero throughout the motion. Since a uniform motion itself defines to be a constant velocity motion in which the rotation is going on at a constant speed, the tangential component of acceleration is zero.
<h3 /><h3>Learn more</h3>
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<h3>Answer details</h3>
Grade: 9
Subject: physics
Chapter: uniform circular motion
Keywords: uniform circular motion
Answer:
the effect is given by the energy that depends on the frequency, but not on the intensity
Explanation:
There are similarities and differences between mechanical waves and electromagnetic waves. The main difference is that mechanical waves depend on a material medium for their propagation, whereas electromagnetic waves are maintained by the oscillation of their electrical magnetoscope fields.
In the case of light (electromagnetic wave) the energy is given by the relation
E = h f
where h is Planck's constant and f is the frequency.
Then the intensity is given by the number of waves or quasiparticles (photons) that are in the ray.
Consequently the effect is given by the energy that depends on the frequency, but not on the intensity
The five planets that you can see from Earth without a telescope are Mercury, Venus, Mars, Jupiter and Saturn.