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3 years ago

Please do!!! Will name the brainlest!

Physics

1 answer:

ipn [44]3 years ago

7 0

i think it goes fall the down winter and then the other seasons

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Meeps (10kg) and Moops (8kg) are having a tug of war contest. Both of them are pulling as hard as they can but neither one is mo

dalvyx [7]

<h2>0 joules</h2>

Explanation:

Work done is defined as dot product of force and displacement.

Let $w$ denote work done.

Let $F$ denote force.

Let $S$ denote displacement.

So, $W=F.S$

It is given that $F=25N$

It is given that both of them are not moving.

So, $|s|=0$

Since $W=F.S=|F||S|cos(\text{angle between F and S})$

So, $W=0$

6 0

3 years ago

A bungee jumped of mass m jumps off a brodge. Assume that the bungee cord behaves like an ideal spring of srping constant k when

anzhelika [568]

Answer:

The magnitude of the acceleration is at its maximum value.

Acceleration = $\frac{-Ak}{m} (m/s)^{2}$

Explanation:

During simple harmonic motions such as the oscillation of a spring, at the two extremes of the motion, the acceleration of the mass becomes maximum. This is because this is the point where the force on the body is maximum.

The angular velocity $\omega=\sqrt{\frac{k}{m} }$

At points of maximum extension x, the maximum acceleration is given by the formula.

$a=-A\omega^{2}$

substituting in the value for $\omega$ , this implies that

$a= -A\times (\sqrt{\frac{k}{m} } )^{2}$

⇒ $a=\frac{-Ak}{m} (m/s)^{2}$

4 0

3 years ago

My trip to work is 120 miles. if i go 8 mph faster than my usual speed, i'll get to work 30 minutes earlier. how long does my tr

forsale [732]

Let x be the time it takes for the trip to be completed given that the speed is y.

When the time is 30 minutes (equal to 0.5 hour) shorter than x, the speed is 8 mph more than the original speed.

The equations that would best represent the given conditions are:
(1) 120 = (x)(y)
(2) 120 = (x - 0.5)(y + 8)

Simplifying,
y = 120/x
Substitute:
120 = (x - 0.5)(120/x + 8)

The value of x from the equation is 3. Thus, if I go with the usual speed, the time it will take me to finish the trip is approximately 3 hours.

7 0

4 years ago

Read 2 more answers

Calculate the resultant force acting in the opposite directions:-<br><br><br><br> answer asap

kap26 [50]

Answer:

Magnitude of the resultant force will be 20N in the direction of $F_2$ .