A thumbtack is designed so that you do not have to use a lot of force to push it through the surface by having a wide top for your thumb to push into, transferring the energy to the tack, and eventually the substance, once the tack is in.
Answer:
Introducing a dielectric into a capacitor decreases the electric field, which decreases the voltage, which increases the capacitance.
Explanation:
A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor but only slightly shift from their average equilibrium positions causing dielectric polarization
Types of dielectric material
Ceramic, Mica paper glass
The x-component of the acceleration is
Explanation:
This problem is an example of uniformly accelerated motion, so we can solve it by using the following suvat equation:
where
u is the initial velocity
a is the acceleration
s is the displacement
t is the time
For the body in this problem, we have:
u = 11.1 cm/s is the initial velocity
The displacement is
s = -3.58 - (3.59) = -7.17 cm
While the time is
t = 2.48 s
Substituting and solving the formula for a, we find the x-component of the acceleration:
Learn more about acceleration:
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