All categories

3 years ago

Need help please and

Physics

1 answer:

kondaur [170]3 years ago

5 0

2^2/1^1 = 4/1 = 4 the answer is 4

You might be interested in

Many gases are shipped in high-pressure containers. Consider a steel tank whose volume is 55.0 gallons and which contains O2 gas

Tems11 [23]

We are given with conditions on temperature, pressure and volume of gas. In this problem, we apply ideal gas law PV = nRT to solve what are asked.

1. PV = nRT ; n = m/MM
16.5 x10^6 Pa * 0.003785 m3= n * 8.314 Pa m^3/ mol K * (23+273) K
n = 25.38 mol; mass = 812.08 grams.
2. V at STP is 22.4 L/mol
3. PV = nRT = 1.5 atm * 0.003785 *1000 L = 25.38 mol * 0.0821 L atm/mol K * T ; T = 2.72 K
4. P * 55 m3/1000 = 25.38 mol * 8.314 Pa m^3/ mol K * (24+273) K
P = 1139. 45 kPa

5 0

3 years ago

You drive 3 hours at 50 mph and then 11 hours at 70 mph. What is your average velocity in miles per hour?

Archy [21]

The average speed of the car is 65.71 mph.

The given parameters;

initial speed of the car, u = 50 mph

time of motion, t = 3 hours

final speed of the motion, v = 70 mph

time of motion, t = 11 hours

The average speed of the car is calculated as follows;

Average speed = total distance divided by the total time of motion.

The total distance = (50 x 3) + (70 x 11) = 920 miles

The total time of motion, = (3 + 11) = 14 hours.

The average speed of the car is;

$average \ speed = \frac{total \ distance}{total \ time } \\\\average \ speed = \frac{920 \ miles }{14 \ hours} \\\\average \ speed = 65.71 \ mph$

Thus, the average speed of the car is 65.71 mph.

Learn more here: the average speed of the car is 65.71 mph.

Learn more here: brainly.com/question/17289046

6 0

3 years ago

Pls answerrr it's urgent!!!!!

lilavasa [31]

Explanation:

the average velocity of the car is 15 m/s example I have this on a test

6 0

2 years ago

A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.90

kiruha [24]

Answer:

1 m/s² down

Explanation:

"Calculate the acceleration of the elevator, and find the direction of acceleration."

Sum of forces in the +y direction:

∑F = ma

N − mg = ma

0.9 mg − mg = ma

-0.1 mg = ma

a = -0.1 g

a = -1 m/s²

6 0

3 years ago

if you have a kinetic energy of 1470 J, and you are 60kg mass and 0 m above the ground, what is you velocity?

laiz [17]

Answer:

The 39.

Explanation:

8 0

3 years ago

Read 2 more answers

Need help please and​

Need help please and