4 years ago

Which answer below is the formula mass of a water molecule

Physics

1 answer:

Firlakuza [10]4 years ago

5 0

Molecular formula of water molecule is H₂O.

You might be interested in

Which of these is NOT a common building material?

Over [174]

B Quartz. Will be your answer of thia

8 0

3 years ago

Read 2 more answers

Which of the following statements is true?

Bad White [126]

The answer is c hope this helps

6 0

3 years ago

Read 2 more answers

Which electromagnetic wave enables us to see objects?

Valentin [98]

Choose visible light

3 0

3 years ago

Read 2 more answers

You are driving to the grocery store at 18 m/sm/s. You are 160 mm from an intersection when the traffic light turns red. Assume

inysia [295]

Answer:

part(a) 151 m

part(b) 1.073 m/s2

part(c) 16.7 secs

Explanation:Firstly the person applied brakes 0.5 secs after seeing the red light hence the distance traveled during this time is

d=v*t

d=18*0.5

d=9m

For part (a)

I have corrected this question and now

The person was 160m from the intersection before applying the brakes as he traveled 9m before the brakes

He is now 151 m from intersection as

s=160-9

s= 151 m

part (b)

As it is given that velocity of the car is 0 at the intersection so we use this information in kinematic equation

$v^2=u^2+2as$

here u=18m/s and s=151

$0=18^2+2a*151\\302a=-324\\a=-1.073 m/s^2$

To calculate time we can use the acceleration equation

$a=\frac{v-u}{t} \\t=\frac{v-u}{a}\\t=18/1.073\\t=16.77 secs$

6 0

3 years ago

If you double the voltage in a circuit and reduce the resistance by a factor of four, what will happen to the current?

Gennadij [26K]

Answer:

It will increase by a factor of 8.

Explanation:

By Ohm's Law, we can relate current, voltage and resistance. It is expressed as V=IR. That is, there is a direct relationship between voltage and resistance and voltage and current.

V = IR

V1/2V1 = I1R1 / I2R1/4

1/2 = 4I1/I2

I2 = 8I1

3 0

3 years ago