3 years ago

If mechanical energy is conserved in a system the energy at any point in time can be in the form of

Physics

1 answer:

I am Lyosha [343]3 years ago

6 0

potential, kinetic, elastc energies

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PLEASE HELP WITH THIS!

jok3333 [9.3K]

Answer: A

Explanation:

Parallel circuit. The source current is three times the current of a single bulb

7 0

3 years ago

A scientific theory provides an explanation of observed

maksim [4K]

Newton’s law of motion

6 0

4 years ago

For a given initial velocity, how does the time td it takes to stop on dry snow differ from the time tw it takes to stop on wet

salantis [7]

let the friction coefficient on dry ice and wet ice is different and given as

$\mu_d$ = on dry ice

$\mu_w$ = on wet ice

now by friction force formula we can say

$F_f = -\mu mg$

so the deceleration due to friction force is given as

$a = -\mu g$

now the deceleration due to friction force on both surface is given as

$a_1 = -\mu_d * g$

$a_2 = -\mu_w * g$

now the time to stop the two blocks can be calculated by kinematics

$v_f - v_i = a t$

$0 - v_0 = -\mu_d * g * t_d$

$t_d = \frac{v_0}{\mu_d* g}$

also for other block on wet ice we can say similarly

$t_w = \frac{v_0}{\mu_w*g}$

now the ratio of two time on two surfaces is given as

$\frac{t_d}{t_w} = \frac{\mu_w}{\mu_d}$

so this is the ratio of time on two surfaces

7 0

3 years ago

An ice cube floats in a glass of water. will cold flow from ice into the water

Ber [7]

It'll certainly seem like it, because the water will get cold. But cold is not a thing. Heat is. What actually happens is that heat from the water flow into the ice (and melts it).

5 0

4 years ago

Colloid is an intermediate state of solution and suspension

snow_tiger [21]

True, because it is the state between solid and liquid

4 0

3 years ago