PHYSICS HIGH SCHOOL

A codec ________. a. converts binary voice signals into digital signals for transmission
b. encrypts the signal
c. encodes voice sounds into analog signals for transmission
d. encodes voice sounds into digital signals for transmission

Answers

Answer 1
Answer:

Answer:

C

Explanation:

A codec is used for encoding

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Opposite electric charges will repel, and like charges will attract.
Solar cells convert what type of energy into electrical energy? A. thermal B. electromagnetic C. chemical D. nuclear
Yellow light has a longer wavelength than green light. Which color of light has the higher frequency?

1380 kg car is moving due east with an initial speed of 27.0 m/s. after 8.00 s the car had showd dwn to 17.0 m/s. find the magnitude and direction of the net force that produces the deceleration

Answers

Answer:

magnitude of force is 1725 N

direction is opposite to the direction of car moving  i.e west

Explanation:

Given data

car mass = 1380 kg

speed = 27.0 m/s

time = 8 s

speed = 17 m/s

to find out

magnitude and direction of the net force

solution

we find here first acceleration thats formula is

a = v(initial) - v(final) / time

a =27 - 17 / 8

acceleration = 1.25 m/s

so force is = ma

force is = 1380 ( 1.25)

force = 1725 N

so magnitude of force is 1725 N

and this is here direction is opposite to the direction of car moving  i.e west

Final answer:

The net force that leads to the deceleration of the 1380 kg car from 27.0 m/s to 17.0 m/s over 8.00 seconds has a magnitude of 1725 N and is directed towards the west.

Explanation:

To solve for the magnitude and direction of the net force that produces the deceleration in the car, you first need to calculate the acceleration and then use it to find the net force using the formula f = m * a. The acceleration here represents a deceleration because the speed is decreasing.

Acceleration can be found using the formula a = (v_f - v_i) / t. Here, v_i is the initial speed (27.0 m/s), v_f is the final speed (17.0 m/s), and t is the time interval (8.00 s). This gives you a = (17.0 m/s - 27.0 m/s) / 8.00 s = -1.25 m/s^2. The negative sign represents deceleration.

Now, apply this deceleration to the formula for force, f = m * a. Here, m is the mass of the car (1380 kg) and a is the value we computed (-1.25 m/s^2). So, f = 1380 kg * -1.25 m/s^2 = -1725 N. The negative sign indicates that the force is in the direction opposite to the initial motion of the car. Therefore, the magnitude of the net force is 1725 N, and the direction is towards the west or opposite to the car's original path.

Learn more about Net Force Calculation here:

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The pressure of a gas will increase as the volume of the container decreases, provided temperature does not change. This statement is called _____. Boyle's law Charles's law Archimedes' principle Pressure laws

Answers

The right answer for the question that is being asked and shown above is that: "Archimedes' principle." The pressure of a gas will increase as the volume of the container decreases, provided temperature does not change. This statement is called Archimedes' principle

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A weight is connected to a spring that is suspended vertically from the ceiling. If the weight is displaced downward from its equilibrium position and released, it will oscillate up and down.If air resistance is neglected, will the total mechanical energy of the system (weight plus Earth plus spring) be conserved?

A. Yes
B. No

Answers

Answer:

Yes

Explanation:

Neglecting air resistance, the total mechanical energy of the system would be conserved because the two forces acting on the weight are the spring force and the gravitational force, and both are conservative in nature.

If you were on the open ocean on a large ship, how could you determine the height of a wave?

Answers

If I were on the open ocean on a large ship, the way on how I can determine the height of a wave would be simply looking at the marks it leaves on the sides of the ship as it hits it. The wet part can be an estimate on the height of the wave.

A pre-trip inspection will help you ____________.A. find problems that could cause a collision or breakdown
B. avoid a post-trip inspection
C. know how far you must travel
D. save money on fuel

Answers

Answer:

A. find problems that could cause a collision or breakdown

Explanation:

A pretrip inspection allows the driver to drive safely because he feels satisfied since he already had checked each and everything in the beginning. This increases the focus on driving. In addition to it there are less chances of happenings and technical faults in the vehicle. It also plays a vital role in the safety circumstances as well.
Answer
A.To find problems that could cause a collision or breakdown.

Explanation
A pre-trip inspection is the trip made by the organizers before the due date of the trip.
There are many reasons why pre-trip inspection is necessary. Some of them include:
1. Finding out how much information is available,
2. The cost to be incurred,
3. Assessing the route and the safety of the place,
4. The most important been to help in preparation of the budget and many others
From the choices given, the most appropriate answer is A. To find problems that could cause a collision or breakdown.

If light photons are massless then why are they attracted by black holes?​

Answers

Answer:

Photons have no mass, they do have energy, and the gravity of a black hole (or any other gravitating body) will attract them.

Explanation:

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