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3 years ago

Firetrucks have the world FIRE written two ways,as seen here,on the front of the truck.Why is that ?

Physics

1 answer:

docker41 [41]3 years ago

4 0

Answer:

While the image this question refers to is missing, I am assuming it shows the word FIRE (1) written in a normally readable way, (2) written in a mirrored way. The display (2) is used in order for other vehicle drivers being able to read the word FIRE in their mirrors (rearview and side). The word printed in a mirrored way will appear normal via a mirror (i.e., the mirror "undoes" the mirroring originally introduced).

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A 58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move towards 3rd base with a velocity of 38.0 m/s. What i

Anestetic [448]

ANSWER:

101.08 joules.

STEP-BY-STEP EXPLANATION:

Given:

m = 0.140 kg

v = 38.0 m/s

Kinetic energy can be calculated using the following formula:

$E=\frac{1}{2}\cdot m\cdot v^2$

Replacing

$\begin{gathered} E=\frac{1}{2}\cdot0.140\cdot(38.0)^2 \\ E=101.08\text{ J} \end{gathered}$

The kinetic energy of baseball is 101.08 joules.

4 0

2 years ago

A person throws a ball straight up. He releases the ball at a height of 1.75 m above the ground and with a velocity of 12.0 m/s.

Lyrx [107]

Answer:

a) 1.22 s

b) 9.089 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

$v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-12}{-9.81}\\\Rightarrow t=1.22\ s$

Time taken by the ball to reach the highest point is 1.22 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=12\times 1.22+\frac{1}{2}\times -9.81\times 1.22^2\\\Rightarrow s=7.339\ m$

The maximum height the ball will reach above the ground is 1.75+7.339 = 9.089 m

8 0

3 years ago

Briefly explain how einstein's special theory of relativity explains the perpendicular (right hand screw like) behavior of movin

ddd [48]

Einstein's special theory of relativity explains that the electric and magnetic fields are both can formulate together in mathematically.

It is given Einstein's special theory of relativity.

It is find the Einstein's special theory of relativity explains the perpendicular behavior of moving charges without recourse to invoking the concept of a magnetic field.

<h2>What is Einstein's special theory of relativity?</h2>

As we know that one charge creates a field and its that field that actually exerts a force on the other charge. Here we it gives the relationship of two fields like electric field and magnetic field and gives the formula for electromagnetic objects.

Special relativity fixes the problem by the points that the magnetic force in one frame of reference easily be an electric force in other and also some of the combination of them in a frame.

Thus, Einstein's special theory of relativity explains that the electric and magnetic fields are both can formulae together in mathematically.

Learn more about magnetic field here:

brainly.com/question/23096032

#SPJ4

3 0

2 years ago

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and r

prisoha [69]

Answer:

B ) 1.5 m/s

Explanation:

For the apparent frequency reflected by enemy submarine , the Doppler effect formula is

F = F₀ ( V + v) / (V - v)

F anf F₀ are real and apparent frequency , V and v are velocity of sound and velocity of enemy submarine respectively.

ΔF / F₀ = $\frac{2\times v}{V -v}$

Put ΔF = 200; F₀ = 100000 and V = 1482

200 / 100000 = $\frac{2\times v }{1482-v}$

v = 1.5 m s⁻¹ .

8 0

4 years ago

Describe an object’s motion when balanced forces act on it

Alinara [238K]

Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal

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3 years ago

Read 2 more answers