All categories

3 years ago

Please help.................

Physics

2 answers:

Goryan [66]3 years ago

7 0

Answer:

I'dont know sooooooooooooooooooooooorrrrrrrrrrrrrrrrry

pshichka [43]3 years ago

7 0

Answer:

At the time of sunrise, Sun appears above the horizon 2 minutes earlier than it really is, because when the light moves from the sun to earth it trave across different atmospheric zone and the density of atmosphere zone increases as the distance decreases from the earth. So incoming light rays bents toward the earth. this bending of light makes a virtual image of Sun above the horizon and we feel like sunrise. similar things happen at the time of sunset and sun appears 2 minutes after the actual sunset. So the total duration of Sun appears above the horizon is approx 4 minutes higher than it really is.

Explanation:

HOPE IT HELPS

You might be interested in

The work-energy theorem states that a force acting on a particle as it moves over a ______ changes the ______ energy of the part

kifflom [539]

Over a DISTANCE
Changes the KINETIC Energy

6 0

3 years ago

A 0.954-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective e

Natasha2012 [34]

Answer:

0.06 A

Explanation:

We have given mass =0.954 kg

velocity =1.27 m/sec

efficiency =0.361 the output kinetic energy of the motor $KE=\frac{1}{2}mv^2=\frac{1}{2}\times 0.954\times 1.27^2=0.769\ J$

Efficiency =0.361

so input to the motor = output/efficiency

so input to the motor = $\frac{0.769}{0.361}=2.1301$

we know that $P=\frac{E}{T}$ where E is energy and T is time so $P=\frac{2.1301}{7.88}=0.2703W$

We know that power P=VI we have given V=4.5 VOLT

So current $I=\frac{P}{V}=\frac{0.2703}{4.5}=0.06 A$

3 0

3 years ago

Read 2 more answers

This simulation is modeling __________________.

bezimeni [28]

Answer:

Gravitational Force

Explanation:

3 0

4 years ago

Military specifications often call for electronic devices to be able to withstand accelerations of 10 g. to make sure that their

trapecia [35]

The solution for this problem is:
(10 x 9.8) = 98.1 m/sec^2 acceleration. Time, to travel 9.4cm or (.094m.), at acceleration of 98m/sec^2

= sqrt(2d/a), = sqrt (98.1 m/sec^2/0.094m) = 32.3050619 sec per cycle

Frequency = (w/2pi), = 32.3050619/2pi
= 32.3050619/6.28318531
= 5.14 Hz would be the answer

6 0

3 years ago

3. As the mass of an object increases, the force of gravity

kondaur [170]

Answer:

As the mass of an object increases, the force of gravity increases as well.

Explanation:

Objects with more mass have more gravity. They work together.

4 0

3 years ago

Please help.................​

Please help.................