3 years ago

Helpppp guys plsss help !

Physics

2 answers:

Vinil7 [7]3 years ago

5 0

Answer:

Explanation:

Salsk061 [2.6K]3 years ago

3 0

Answer:

with what? I can help but with what

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With good tires and breaks, a car traveling 50 mi/hr on dry pavement can travel 400 ft when the driver reacts to something he se

Bogdan [553]

Answer: $6.72 m/s^2$

Explanation:

Given

initial velocity $u=50 mi/hr\approx 73.33 ft/s$

Distance traveled before stopping $s=400 ft$

using equation of

$v^2-u^2=2as$

where v=final velocity

u=initial Velocity

a=acceleration

s=displacement

v=0 as car stops after travelling $400 ft$

$0-73.33^2=2\times a\times 400$

$a=-6.72 m/s^2$

negative sign indicates it is deceleration

3 0

3 years ago

How do I do this problem?

Aleks04 [339]

Use Charles Law: V1/T1 = V2/T2

0.30 m^3/27 C = V2/127 C

27V2 = 127 * 0.3

V2= 38.1/27 = 1.4 m^3

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3 years ago

Scientists believe the universe follows a set of “rules” known as?

g100num [7]

I believe the answer is Natural Laws

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3 years ago

How does the value of gravity vary as you go:

iragen [17]

Answer:

Gravity changes with altitude. as we know The gravitational force is proportional to 1/R2, where R is your distance from the center of the Earth.

eg. The radius of the Earth at the equator is 6400 kilometers.

Let's say you were in a jet at the equator that was 40 kilometers high above the earth's surface.

may be helpfull

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2 years ago

The de Broglie wave is produced only by sub atomic particle and photon. O True O False

Alina [70]

Answer:

True

Explanation:

Matter can be in the form of a particle or a wave. This is known as the dual nature of matter. This concept was proposed by Louis de Broglie and was named after him. This phenomenon has been observed for all the elementary particles.

The de Broglie wavelength is given by

$\lambda=\frac{h}{p}=\frac{h}{mv}$

Where

h = Planck's constant

p = Particles momentum

m = Mass of particle

v = Velocity of particle

8 0

3 years ago