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Yuri [45]
3 years ago
15

Calculate the acceleration for the following data: Initial Velocity=20 m/s, Final

Physics
1 answer:
Korolek [52]3 years ago
7 0

Answer:

a = 3 [m/s²]

Explanation:

To solve this problem we must use the following equation of kinematics.

v_{f} =v_{o} +a*t

where:

Vf = final velocity = 60 [m/s]

Vo = initial velocity = 20 [m/s]

a = acceleration [m/s²]

t = time = 10 [s]

Now replacing these values we have:

60 = 20 + (a*10)

60 - 20 = 10*a

30 = 10*a

a = 3 [m/s²]

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Answer all these and i'll mark brainliest.
Luda [366]
Formula for net force: force= mass x acceleration
6 0
3 years ago
What is the concentration of molecular oxygen (O2) in mol/L on a June day in Toronto when atmospheric pressure is 1.0 atm and th
saveliy_v [14]

Answer:

The concentration of mole evil at oxygen on that day is 0.00858 mol/L

Explanation:

Here, we want to calculate the concentration of molecular oxygen

The pressure on that day is 1.0 atm

Since oxygen is at a concentration of 21%, the pressure of oxygen will be 21/100 * 1 = 0.21 atm

Now let’s calculate the concentration;

From Ideal gas law;

PV = nRT

This can be written as;

P/RT = n/V

The term n/V refers to concentration;

Let’s make substitutions now;

P = pressure = 0.21 atm

R = molar gas constant = 0.0821 L•atm/mol•k

T = temperature = 25 = 25 + 273.15 = 298.15 K

Substituting these values, we have;

n/V = C = 0.21/(0.0821 * 298.15) = 0.00858 mol/L

6 0
3 years ago
The speed for a car that went a distance of 125 miles in 2 hours time is ______. Question 2 options: 250 meters/sec 62.5 miles/h
Goryan [66]

Answer:

62.5 miles per hour

Explanation:

Speed = Distance travelled / Time taken

Speed = 125/2 = 62.5

You derive the units of the speed...by using the speed formula....,

Speed = Distance/Time

Speed = miles/hour

Hence the units for the speed = miles/hour

5 0
3 years ago
a light bulb has a resistance of 360 . what is the current in the bulb when it has a potential difference of 120 v across it? 0.
xenn [34]
Presume we are looking for the current:

V = IR

120 = I*360

120/360 = I

1/3 = I

I = 1/3 = 0.333..

Current ≈ 0.33 Ampere.
7 0
3 years ago
Read 2 more answers
. Explain how surface waves can have characteristics of both longitudinal waves and transverse waves.
Annette [7]

Answer:

This whole concept depends on the depends on the direction of propagation of the surface wave or displacement of wave such that if its in direction of wave velocity its said to features of longitudinal wave and if its in direction at 90° to wave velocity its said to have transverse features

5 0
3 years ago
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