If the vehiche has a speed of 24.0 m/s at point a what is the force of the track on the vehicle at this point?

Answer:

I think B) is uncorrect

Explanation:

As A) p=w/t so it's correct relation

C) power depend on time and work as work is distance multiple force so it refer to velocity

D) the powerful mean much work in a few time

Answer:

A first-class lever: fulcrum is between input and output force; second-class lever: output force is between input force and fulcrum; third-class lever: input force is between fulcrum and output force

Answer:6.2

Explanation:

Answer:

a. The ratio of their resistance is 2783:64

b. The ratio of their energy is 4:23

c. The charge on the first bulb is 5.75 C

The charge on the second bulb is [tex]0.\overline {36}[/tex] C

Explanation:

The voltage on one of the electric bulbs, V₁ = 40  volts

The power rating of the bulb, P₁ = 230 w

The voltage on the other electric bulbs, V₂ = 110 volts

The power rating of the bulb, P₂ = 40 w

a. The power is given by the formula, P = I·V = V²/R

Therefore, R = V²/P

For the first bulb, the resistance, R₁ = 40²/230 ≈ 6.96

The resistance of the second bulb, R₂ = 110²/40

The ratio of their resistance, R₂/R₁ = (110²/40)/(40²/230) = 2783/64

∴ The ratio of their resistance, R₂:R₁ = 2783:64

b. The energy of a bulb, E = t × P

Where;

t = The time in which the bulb is powered on

∴ The energy of the first bulb, E₁ = 230 w × t

The energy of the second bulb, E₂ = 40 w × t

The ratio of their energy, E₂/E₁ = (40 w × t)/(230 w × t) = 4/23

∴ The ratio of their energy, E₂:E₁ = 4:23

c. The charge on a bulb, 'Q', is given by the formula, Q = I × t

Where;

I = The current flowing through the bulb

From P = I·V, we get;

I = P/V

For the first bulb, the current, I = 230 w/40 V = 5.75 amperes

The charge on the first bulb per second (t = 1) is therefore;

Q₁ = 5.75 A × 1 s = 5.75 C

The charge on the first bulb, Q₁ = 5.75 C

Similarly, the charge on the second bulb, Q₂ = (40 W/110 V) × 1 s = [tex]0.\overline {36}[/tex] C

The charge on the second bulb, Q₂ = [tex]0.\overline {36}[/tex] C.

d. The question has left out parts

Explanation:

Consumerism is a social and economic order that encourages the purchase of goods and services in ever-greater amounts. ... In economics, consumerism refers to economic policies placing emphasis on consumption.

Answer:

I only know 3 of them so hope this help!

Integrity And Ethics. Simply put, the two principles of integrity and ethics translate into doing the right thing, in...

Respect. Without dedicated employees, a company is nothing. ... Committed employees form the backbone of the entire...

Innovation (Not Imitation). This is crucial if a company wants to be a...

IF YOU HAVE TIME COME AND VISIT TO MY CHANNRL IN YOU TUBE IT CALLED: It'z Jennie AMV! THANKS!

Answer:

Hello, I believe it would have a negative charge considering protons have a positive charge while elctrons have a negative charge

Explanation:

Answer:

Nikola Tesla was a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist best known for his contributions to the design of the modern alternating current electricity supply system.

Answer:

A.

Explanation:

more heat = heat energy becomes more kinetic energy = more particle collision

Answer:

the answer is A.There is increased kinetic energy making them collide more and speeds up the rate of reaction.

Explanation:

Answer:

Wetland

Explanation:

Have a good day!

Answer:

a. i His weight and the normal force on him due to the ground

ii The weight and the normal force are balance

b. There are four forces acting on him while he is walking. These are the backward push due to his leg on the ground and the frictional force between his feet in the horizontal direction and, his weight and normal force on his feet in the vertical direction.

Explanation:

a. i Describe the forces that are acting on a person who is standing still on a sidewalk

His weight and the normal force on him due to the ground act on him while the person is standing on the sidewalk

ii. identify whether the forces are balanced or unbalanced.

The weight and the normal force are balance because, the person does not move in the vertical or horizontal direction.

b. Describe how the forces would change if the person started walking.

When the person starts walking, the backward push due to his leg on the ground and the frictional force between his feet and the ground now acts on him in the horizontal direction. The frictional force acts in the forward direction and tends to move him forward. His weight and normal force on his feet still act vertically and are both balanced since he does not move in the vertical direction.

So, there are four forces acting on him while he is walking. These are the backward push due to his leg on the ground and the frictional force between his feet in the horizontal direction and, his weight and normal force on his feet in the vertical direction.

Answer:

its b

Explanation:

i did this question in a test before and i got it right

Answer:

Hellow ❤️

.

.

Gooood Morning

Answer:

?

Explanation:

I thought we were talking about a Flashpoint or something?

Answer: A, C, E

Explanation:

Gamma rays, Microwaves, and Radio waves

Answer:

Go out into the country. Look on a farm. Look in a barn. Listen for, "MOOOOO." You found a cow.

Explanation:

Answer:

15.7 ; 78.5

Explanation:

Given that

The mechanic use a screw driver to install 1⁄4-20 UNC bolt

And, the effort force is 5lb

We need to find out the mechanical advantage

And, the resistance force

As we know that

The Mechanical advantage of a screw = Circumference ÷ pitch

where,  

Circumference = pi × d

 pi = 3.142, D = diameter

So,  

Circumference = 3.142 × (1 ÷ 4)

= 0.785 in

Now

Pitch = 1 ÷ TPI

Here TPI (thread per inch) = 20

Pitch = 1 ÷  20 = 0.05

So,

Mechanical advantage = 0.785 ÷ 0.05

= 15.7

Now Resistance force if effort force is 5lb

We know that

Mechanical advantage = Fr ÷ Fe

Here

Fe = effort force, Fr = resistance force

15.7 = Fr ÷ 5

Fr = 15.7 × 5

= 78.5 lbs

7200 joules of heat and light energy was dissipated into the air. But no work was done ... no force moved through no distance.

Answer:

Conduction

Explanation:

The transfer of energy through matter by direct contact of particles is called. Conduction.

Answered by the ONE & ONLY #QUEEN herself aka #DRIPPQUEENMO!!!

HOPE THIS HELPED!!!

Answer:

 L = 17.94 m

Explanation:

The angular velocity of a simple pendulum is

          w = [tex]\sqrt{ \frac{g}{L} }[/tex]

the angular velocity is related to the period

         w = 2π / T

we substitute

         [tex]\frac{4\pi ^2 }{T^2} = \frac{g}{L}[/tex]

         L = [tex]\frac{g T^2}{4 \pi ^2}[/tex]

let's calculate

         L = 9.8 8.5² / 4π²  

         L = 17.94 m

Answer:

5.59 m/s2

Explanation:

F = 1900 N

m = 340 kg

F = ma

Therefore, a = 1900/340 = 5.59

Answer:

Symbiosis

Explanation:

When you have a symbiotic relationship,  it is between two or more organisms of different species.

Answer: 60

Explanation:

Answer:

Sun, fireflies, glow worms ,Stars ,a lighter torch ,a kerosene Oil Lamp, burning candle, vapor light, a bulb

Answer:

Sun

Flame in an oil lamp

tube light

bulb

fireflies

lighted candle

LEDs

laser

jellyfish

Fire

Explanation:

luminous objects are objects that produce light and are responsible for vision.

Answer:

The ice will melt and her hand will get cold

Explanation:

Answer:

the answer is 25

Explanation:

because the formula for velocity is distance divided by time.  

Answer:

11.85 k

Explanation:

11.85 k