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4 years ago

Position yourself with a clear line-of-sight so you can search the traffic environment about __________ seconds ahead.

Physics

2 answers:

maxonik [38]4 years ago

7 0

Answer:

30 seconds ahead.

Explanation:

Its about 90% of the decisions which are made by someone while driving based on what they see. The vision must be good to make the decision accurately and timely before reacting to the environment.

Line of sight is define as the view which you can see without any obstruction. The best condition of proper line of sight is that someone is needed to see in all direction front, behind, left and right.

To establish the clean line of sight the person should search the traffic environment about 30 seconds ahead.

patriot [66]4 years ago

6 0

Answer:

30 seconds.

Explanation:

The blank will be filled with 30 seconds.

To have a clear line of sight so that you can access the traffic environment you should be 30 second ahead.

To access traffic environment driver should have good vision so that he can gather information accurately and take his decision according to it.

Looking the traffic signal, vehicle around you and flow of the traffic and then acting according to it takes 30 second.

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You come across an open container which is filled with two liquids. Since the two liquids have different density there is a dist

Slav-nsk [51]

Answer:

526.57 Pa

Explanation:

P ( pressure at the bottom of the container) = 1.049 × 10^5 pa

Using the formula of pressure in an open liquid

Pw ( pressure due to water) = ρhg where ρ is density of water in kg/m³, h is the height in meters, and g is acceleration due to gravity in m/s²

Pw = 1000 × 9.81 ×0.209 = 2050.29 Pa

P( atmospheric pressure) = 1.013 × 10^5 Pa

Pl ( pressure due to the liquid) = ρ(density of the liquid) × h (depth of the liquid) × g

Subtract each of the pressure from the absolute pressure at the bottom

P(bottom) - atmospheric pressure

(1.049 × 10^5) - (1.013 × 10^5) = 0.036 × 10^5 = 3600 Pa

subtract pressure due to water from the remainder

3600 - 2050.29 = 1549.71 Pa

1549.71 = ρ(density of the liquid) × h (depth of the liquid) × g

ρ (density of the liquid) = 1549.71 / (h × g) = 1549.71 / (0.3 × 9.81) =526.57 Pa

4 0

3 years ago

3. Which form of radiation is used to kill microorganisms?

inn [45]

Answer:

Explanation:

uv is safe for humans but bad for bacteria etc... at least I think. I'm sorry if I'm wrong

4 0

3 years ago

Hooke's law states that the force, F, in a spring extended by a length x is given by

timofeeve [1]

Answer:

dimensions of k are kg / s^2

Explanation:

F=ma (Newton's second law)

F=-kx (Hooke's law)

so equate both

-kx = ma

k = -ma/x

= mass * acceleration / distance (dimensions, -1 has no dimension)

= kg * m/s^2 / m

= kg / s^2

6 0

3 years ago

In major league baseball, the pitcher's mound is 60 feet from the batter.If a pitcher throws a 89 mph fastball, how much time el

lianna [129]

<span>Hitting can be broken down into three segments; SEE, REACT, SWING. You watch the ball in the pitcher's hand during the windup and you watch the ball leave the pitcher's hand when it is thrown and you watch the spin of the ball as it comes towards the plate. That is SEE. You determine what the pitch is (fastball, curveball, etc.), you determine where the ball is going to go and you determine whether it is headed towards an area that you think you can get good wood on it. That is REACT. You swing if you like the pitch or don't swing if you don't like the pitch. That is SWING. It doesn't make any difference whether you are playing with a tennis ball or a golf ball or a baseball. The theory and mechanics are the same. So, to answer your question I would say the more you practice the better you will be, regardless of the type of ball you use to practice with.</span>

8 0

3 years ago

1. A liquid of mass 250g is heated with an electric heater. Its temperature rises from 30°C to 80°C, the specific heat capacity

statuscvo [17]

Answer:

1) 50 seconds 2) 100°C

Explanation:

(Follows formula of Power=Energy/Time)

1) 500W x X = 2000J/kg°C x .25kg x 50°C

X = 50 seconds.

2) 2000W x 300s = 1000J/kg°C x 2kg x X

X = 300

Initial temperature => 400°C-300°C = 100°C

8 0

3 years ago