2 years ago

A certain automobile is 6.0 m long if at rest. If it is measured to be 4.8 m long while moving, its speed is:

Physics

1 answer:

tatuchka [14]2 years ago

7 0

Answer:

1.8*10^8m/s

Explanation:

Using

L= lo√1-v²/c²

So making v subject we have

V= c√1-4.8²/6²

V= 0.6*c

V= 0.6*3E8m/s

V= 1.8*10^8m/s

You might be interested in

Fiber is an example of a complex carbohydrate true or false

kkurt [141]

The answer is True
Fiber is an example

8 0

2 years ago

Read 2 more answers

a small table has a mass of 4kg, stands on four legs, each leg having an area of 0.001 m2. what is the pressure exerted by the t

Gemiola [76]

Answer:

P = 10 kPa

Explanation:

Given that,

The mass of a small table, m = 4 kg

The area of each leg = 0.001 m²

We need to find the pressure exerted by the table on the floor. Pressure is equal to the force per unit area. So

$P=\dfrac{mg}{4\times A}\\\\P=\dfrac{4\times 10}{4\times 0.001}\\P=10000\ Pa\\\\or\\\\P=10\ kPa$

So, the required pressure is 10 kPa.

3 0

2 years ago

What determines the state of matter for any

noname [10]

Answer:

I think the answer is B. amount of energy present but I'm not 100% sure

Explanation:

7 0

2 years ago

Read 2 more answers

What force keeps the outside of a bicycle wheel from flying off?

4vir4ik [10]

Answer:

Centripetal force

Explanation:

8 0

2 years ago

State the law of conservation of energy

storchak [24]

Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

7 0

2 years ago