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Kamila [148]
2 years ago
11

In a post office, a 3-m long ramp is used to move carts onto a dock that is higher than 1 m. Which describes how the IMA of this

ramp compares with the IMA of the ramp that has a height of 1 m? It is greater. It depends on friction. It is the same. It is less.
Chemistry
1 answer:
pishuonlain [190]2 years ago
6 0

Answer:

well I think the answer is it depends on the friction

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It takes 330 j of energy to raise the temperature of 14.6 g of benzene from 21.0 °c to 28.7 °c at constant pressure. What is the
Akimi4 [234]

The mathematical expression for heat capacity at constant pressure is given as:

Q=n\times C_{p}\times \Delta T   (1)

where, Q = heat capacity

C_{p} =  molar heat capacity at constant pressure

\Delta T = change in temperature

n = number of moles

Therefore, \Delta T = 28.7^{o}C-21^{o}C

= 7.7 ^{o}C

Number of moles  =\frac{given mass in g}{molar mass}

= \frac{14.6 g }{78.11 g/mol}

= 0.186 mole

Put the values in formula (1)

330 J=0.186 mole\times C_{p}\times (7.7 ^{o}C+ 273) (conversion of degree Celsius into kelvin)

C_{p} = \frac{330 J}{0.186 mole\times 280.7 K}

= \frac{330 J}{52.2102 mole K}

= 6.32 J /mol K

Hence, molar heat capacity of benzene at constant pressure  = 6.32 Jmol^{-1} K^{-1}

6 0
2 years ago
Jane and Jack have a bicycling competition Jane rides a constant speed of 12 miles per hour while Jack rides at a constant speed
MariettaO [177]

Answer:

Explanation:

I don't know how you want the conversion done. I use dimensional analysis.

Jane

12 miles / hour [1.6 km/1 mile][1000 m/1 km][1 hour / 3600 sec]

12 * [1.6 * 3600 / 1000  m/s] = 69.12 m/s

5.33 m/s      This answer is a bit shorter than using 5280 feet.

Using 5280 feet

12 miles / hour [5280 ft/1 mile] [1 m/3.281 feet] * [1 hr/3600 sec]

12 * 5280 / (3.281 * 3600)

12 *. 4470

5.36

Jack

330 feet / minute [ 1 meter / 3.281 feet] [1 minute / 60 seconds]

330 * 1/(3.281 * 60)

330 * 1/(196.86)

1.676 m/s

She's going faster than he is, no matter which method is used to do the calculation

4 0
1 year ago
As an atom's nucleus gets larger the electric charges repelling the protons get larger. To compensate for this greater electric
IrinaK [193]
i think the greater the electric charge the atom decreases in size
5 0
2 years ago
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The reading on a speedometer represents the average velocity of the car. True False
Sedbober [7]
Answer: False. Hope this helps!!
7 0
2 years ago
________ is the study of matter and the energy that causes matter to combine, break apart and recombine in everything living and
Kipish [7]

Answer: Emperical formula

Explanation:

8 0
2 years ago
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