All categories

3 years ago

Why don't lights turn green for both north and south bound traffic?

Physics

1 answer:

harina [27]3 years ago

8 0

because its has energy and uses it natural energy from the ground

You might be interested in

The Bohr model below represents which answer Choice

Anton [14]

Answer:

Na⁺

Explanation:

In the given atom:

Number of protons = 11

Number of neutrons = 12

So, the number of electrons = 10

The number of protons within an atom is used to determine the kind of atom we have been given.

Since the number of protons is the same as the atomic number, here the atomic number is 11 and this is Sodium .

In this sodium atom, the number of protons is more than the number of electrons;

Charge = number of protons - number of electrons = 11 - 10 = +1

So, we have a Na⁺

4 0

3 years ago

American eels (Anguilla rostrata) are freshwater fish with long, slender bodies that we can treat as a uniform cylinder 1.0 m lo

madam [21]

Answer:

option D

Explanation:

given,

uniform length of cylinder = 1 m

diameter of the cylinder = 10 cm = 0.1 m

Eels have been recorded to spin = 14 rev/s

camera records at = 120 frames per second

time = $\dfrac{1}{120}\ s/frame$

angle at which eel rotate = ?

ω = 14 rev/s

ω = 14 x 2 π rad/s

ω = 28 π rad/s

angle at which eel rotate

θ = ω t

θ = $28\pi\times \dfrac{1}{120}$

θ = 0.733 rad

θ = $0.733 \times \dfrac{180^0}{2\pi}$

θ = $42^0$

Hence, the correct answer is option D

4 0

3 years ago

What type of device is a refrigerator?

Tamiku [17]

A heat pump that uses work to move heat

7 0

2 years ago

Two bullets are fired simultaneously parallel to a horizontal plane. The bullets have different masses and different initial vel

Ksivusya [100]

Answer:

Therefore, the answer is E. They strike the plane at the same time.

Explanation:

Here, it is seen that the time depends only on acceleration due to gravity (which is a constant) and vertical displacement, and not on velocity of the bullets or mass of the bullets.

Hence, the bullets that are fired simultaneously parallel to the horizontal plane will strike the plane at the same time.

using equation of motion for displacement

s= ut + ¹/₂gt²

here, g is the acceleration due to gravity along y- direction

U along y is 0

s = (0)t + ¹/₂gt²

s=¹/₂gt²

make t the subject of formula = $\sqrt{\frac{2s}{g} }$

6 0

3 years ago

1. What are three examples of how invasive species spread?

Darya [45]

Answer:

Their primary way of spreading is from human activities, they can quickly travel around the world for example these new "murder" hornets that can kill a large bee hive with one sting, they traveled all the way from Asia. Invasive species can also be through people's luggage, small boats, planes and large shipment like cargo carriers. I hope this helps. : )

Explanation:

8 0

3 years ago