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4 years ago

1. Moby travels down a halfpipe on his skateboard in five seconds. His speed at the bottom is 10 m/s. What was his

Chemistry

1 answer:

pshichka [43]4 years ago

3 0

The acceleration of Moby is 2 m/s²

Explanation:

Given:

Time, t = 5 seconds

Velocity, v = 10 m/s

Acceleration ,a = ?

We know:

$Acceleration = \frac{velocity}{time}$

On substituting the value we get:

$a = \frac{10}{5} \\\\a = 2 m/s^2$

Therefore, the acceleration of Moby is 2 m/s²

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High-flying aircraft release NO Into the stratosphere, which catalyzes this process. When O3 and NO concentrations are 5 x 10^12

zvonat [6]

Answer:

Explanation:

1) NO + O3 -> NO2 + O2 (slow)

2) NO2 + O -> NO + O2 (fast)

Overall reaction: O3 + O -> 2O2

1) rate = k [NO] [O3]; slow, rate determining step,

k = 6 x 10^-15 (cm^6/molecule

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3 years ago

Which of the following statements is true of proteins?

UkoKoshka [18]

Answer:

The answer is Denaturation is reversible

Explanation:

Denaturation of proteins is the process whereby there is a disruption in the tertiary, quaternary or secondary structure of proteins which causes a conformation change in its action

denaturation is reversible, that is, the proteins can regain their native state when the denaturing influence is removed. This process can be called renaturation.

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4 years ago

Fill in the missing piece of the table

djyliett [7]

Answer: The final volume $V_2$ is 263.09 ml

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=156ml\\T_1=215^oC=(215+273)K=488K\\V_2=?\\T_2=550^0C=(550+273)K=823K$

Putting values in above equation, we get:

$\frac{156}{488}=\frac{V_2}{823}\\\\V_2=263.09ml$

Thus final volume $V_2$ is 263.09 ml

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3 years ago

What Percent of the moon is always in daylight?

wolverine [178]

Answer: 50%

Explanation:

The best we get from the moon is a full moon, which is just half of the moon shining from the earth while the other half is in complete darkness.

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3 years ago

How is pascals law used in the brakes of a car? I’m giving 67 points!

bogdanovich [222]

Answer:

A change in pressure at any point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid. With that said; in a hydraulic brake system, if the piston in the master cylinder(the part your foot pushes on) is one inch square area and you push with 100 pounds, then 100 pounds per square inch is transmitted to all parts of the hydraulic system. Now if the brake caliper piston(the part that pushes against the brake pad) is 2 square inches then there will be a total of 200 lbs of force being applied by the wheel cylinder, because each square inch has 100 pounds pushing on it. This is basically how cars brake systems are designed in order to reduce the amount of force required by the driver.

Btw if u want to give 67 points u must multiply that by 2 since two people answer and they get half of 67. Im still happy with my 34 though!

8 0

3 years ago