A. When changing lanes, what are the safety steps to follow? B. What are the additional steps to follow when passing?

Answers

Answer 1

Answer: A. check your mirrors and blindspots carefully for any potential hazards
B. Scan for hazards, e.g., oncoming vehicles, vehicles approaching from rear, merging vehicles;
Check for blind spots;
Signal your intention and accelerate into passing lane;
Accelerate quickly to an appropriate speed

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A car traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is the acceleration?
A stone is thrown with an initial velocity of 20 meters per second straight upward from the edge of a cliff 100 meters above a canyon floor. The stone just misses the cliff'a edge on its way down. (Neglect friction) Calculate the time required for the stone to reach its maximum height. Calculate the maximum height of the stone above the edge of the cliff.
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1012W) pulses of light that last for an extremely short time (a few nanoseconds). These short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. We can model a typical such cell as a disk 5.0μm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0×1012W. We shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse. (a) How much energy is given to the cell during this pulse? (b) What is the intensity (in W/m2) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?

In the Niagara Falls hydroelectric generating plant, the energy of falling water is converted into electricity. The height of the falls is about 48 meters. Assuming that the energy conversion is highly efficient, approximately how much energy is obtained from one kilogram of falling water? Therefore, approximately how many kilograms of water must go through the generators every second to produce a megawatt of power (106 watts)?

Answers

Answer:

2.124 kg of water

Explanation:

height of the falls is about 48 meters.

Mass of water needed is 1kg = 1000g

Power needed is 106 watts.

The amount of energy in 106 watts in one sec is 106 joules.

To calculate the energy of the 1kg falling water = Mgh

Energy = 1000*9.81*48

Energy = 470880 joules.

1 megawatt is = 1000000watts

The kilogram of water needed is 1000000/470880 = 2.124 kg of water

NEED ASAP PLEASE !! Billy drops a water balloon from the roof of his house. Since the balloon began with an original velocity of zero, how far above ground was the balloon dropped if it took 2.5 seconds to hit the ground?

A. 30.6 m
B. 122.5 m
C. 12.3 m
D. 49.0 m

Answers

Answer: The correct answer is option (A).

Explanation:

Initial velocity of the balloon = 0 m/s

let the distance covered by the balloon from roof to the ground= h

Time taken by the balloon to reach the ground = t = 2.5 seconds

Acceleration due to gravity = g =9.8 $m/s^2$

Using confuse equation of the motion:

$h=ut+(1)/(2)gt^2$

$h=0 m/s* 2.5 s+(1)/(2)*9.8 m/s^2* (2.5 s)^2=30.625 m\approx 30.6 m$

Hence, the correct answer is option (A).

The balloon was 30.65 meters above ground.

ANSWER: A

When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released.Which identifies the energy transformations that take place in Anna’s body as this process takes place?

A: Mechanical energy is converted to kinetic energy, which is then converted to potential energy.
B: Chemical energy is converted to thermal energy and electrical energy.
C: Electrical energy is converted to chemical energy and thermal energy.
D: Mechanical energy is converted to potential energy which is then converted to kinetic energy.

Answers

The correct answer is

B: Chemical energy is converted to thermal energy and electrical energy.

In fact:

- initially, the energy is contained in the molecular bonds of the glucose, inside the sugars that Anna is eating, and this energy is in the form of chemical energy

- Part of this energy is converted into the electrical energy that make the heart beating, and this energy is in the form of electrical energy

- The rest of the energy is converted into heat for the body, and this energy is in the form of thermal energy

Answer: B. Chemical energy is converted to thermal energy and electrical energy.

Explanation:

What is the time required for an object startingfrom rest to fall freely 500. meters near Earth’s
surface?
(1) 51.0 s (3) 10.1 s
(2) 25.5 s (4) 7.14 s

Answers

The time required for an object starting from rest to fall freely 500. meters near Earth’s is 10.1 s

Without air resistance Distance = 1/2 g T²

500 m = (1/2) (9.8 m/s²) (T²)

500 m = (4.9 m/s²) (T²)

Divide each side by (4.9 m/s²)

T² = (500 m) / (4.9 m/s²)

= 102.04 s²

T = √ (102.04 s²)

T = 10.1 seconds

To learn more about how to Calculate Distance refer:brainly.com/question/661229

#SPJ2

(3) 10.1 second Using equation of motion 500 = (0.5)(9.81)t^2. Rearranging, t = sqrt(1000/9.81) = 10.1s

When one tectonic plate moves underneath another, what is occurring?A. subduction
B. collision
C. uplift
D. slip

Answers

the answer is A.) subduction

Only Women and children can be victims of domestic violence

Answers

That statement is wrong.

Domestic violence could happen to anyone.

There are a lot of cases in which the domestic violence's victims are men or elderly people.

that is false because even boys who are nerds or poor and even gay are victims of domestic violence.

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The atmosphere and oceans are constantly moving. Their activity is due primarily to _____. the Sun's energy the moon's gravity the earth's gravity air pressure