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3 years ago

Question 5 (1 point)

Physics

1 answer:

Andre45 [30]3 years ago

5 0

The symbol most often used to represent electric current is ' <em>I</em> '.

That's a "capital eye", not a "one".

The unit of measurement of electric current is the Ampere, ' <em>A</em> '.

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Earth is slightly closer to the Sun in January than in July. How does the area swept out by Earth's orbit around the Sun during

suter [353]

Answer: Option <em>a.</em>

Explanation:

Kepler's 2nd law of planetary motion states:

<em>A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.</em>

It tells us that it doesn't matter how far Earth is from the Sun, at equal times, the area swept out by Earth's orbit it's always the same independently from the position in the orbit.

3 0

3 years ago

A rod of length L is pivoted about its left end and has a force F applied perpendicular to the other end. The force F is now rem

timurjin [86]

Answer:

$F' = 4F$

Explanation:

When force applied to the end of the rod in perpendicular direction then net torque on the rod is given as

$\tau = L F sin90$

$\tau = LF$

Now another force is applied at mid point of the rod at an angle of 30 degree with the rod

so new value of torque is given as

$\tau = \frac{L}{2}F' sin\theta$

$LF = \frac{L}{2}F' sin30$

$LF = \frac{F'L}{4}$

so we have

$F' = 4F$

3 0

3 years ago

Jordana pulled a muscle while running at a track meet. Her coach gave her a self-heating pack to treat the injury. The instructi

pochemuha

Answer:

Chemical

Explanation:

6 0

3 years ago

A space rocket is launched and accelerates uniformly to 160 m/s in 4.5 s. Calculate the acceleration of the rocket.

-BARSIC- [3]

Answer:

Explanation:

The acceleration of an object given it's velocity and time taken can be found by using the formula

$a = \frac{v}{t} \\$

v is the velocity

t is the time

From the question we have

$a = \frac{160}{4.5} = 35.55555...$

We have the final answer as

Hope this helps you

6 0

3 years ago

If the acceleration of an object is zero, then that object cannot be moving.

larisa86 [58]

Answer:

False

Explanation:

Because acceleration just means that the speeds getting faster he could already be going at a same rate of speed and it wouldn't be counted as acceleration because acceleration would be if he increased the speed

4 0

3 years ago