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3 years ago

Can anyone explainif knows

Physics

2 answers:

Nostrana [21]3 years ago

6 0

Answer:

Explanation:

Aleks [24]3 years ago

5 0

Answer:

Sry I’m just trying to get my points :(

Explanation:

Better luck nest time I would help if I was smart enough but currently I’m as d u m b as a rock...

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A 10-gram aluminum cube absorbs 677 joules when its temperature is increased from 50°c to 125°

kotegsom [21]

Answer : The specific heat of aluminum is, $0.90J/g^oC$

Solution : Given,

Heat absorbs = 677 J

Mass of the substance = 10 g

Final temperature = $125^oC$

Initial temperature = $50^oC$

Formula used :

$Q= m\times c\times \Delta T$

or,

$Q= m\times c\times (T_{final}-T_{initial})$

Q = heat absorbs

m = mass of the substance

c = heat capacity of aluminium

$T_{final}$ = final temperature

$T_{initial}$ = initial temperature

Now put all the given values in the above formula, we get the specific heat of aluminium.

$677g= (10g)\times c\times (125-50)^oC$

$c=0.9026J/g^oC=0.90J/g^oC$

Therefore, the specific heat of aluminum is, $0.90J/g^oC$

7 0

3 years ago

Read 2 more answers

The primary reason a light bulb emits light is due to

Semmy [17]

Answer:

Resistance

Explanation:

5 0

3 years ago

Read 2 more answers

A 40-gram block of copper at 95*C is placed in 105 g of water at an unknown temperature. After equilibrium is reached, the final

REY [17]

Answer:

Attention all people! There is a girl trying to get people to press this link and she tries to control your computer and steal your information that is on the computer! SHE WILL CAUSE A VIRUS!!!!! DO NOT PRESS ANY LINKS!!!!!!!!!

Explanation:

5 0

3 years ago

Evan is just leaving his house to visit his grandmother. Normally, the trip takes him 35 minutes on the freeway, going 70 mph. B

sdas [7]

Answer:

Evan drive at speed = 81.67 m/hr

Explanation:

Normal speed of Evan = 70 m/hr

Time taken by Evan to visit his grandmother = 35 min = $\frac{35}{60}$ hr

Distance covered by Evan = ${speed}\times{time taken}$ = $70\times\frac{35}{60}$

= $\frac{245}{6}$ miles

According to the problem, one day Evan was running 5 minutes late. So, the time Evan has to visit his grandmother is 30 mins.

To reach on time, Evan should be drive at the speed :

Speed = $\frac{Distance}{Time}$

= $\frac{\frac{245}{6} }{\frac{30}{60} }$

= 81.67 m/hr

7 0

4 years ago

How much does a person weigh if it takes 700 kg*m/s to move them 10 m/s NEED ASAP

madreJ [45]

Answer:

$\huge\boxed{m = 70 \ kg}$

Explanation:

Given Data:

Momentum = P = 700 kg m/s

Velocity = v = 10 m/s

Required:

Mass = m = ?

Formula:

P = mv

Solution:

m = P / v

m = 700 / 10

m = 70 kg

$\rule[225]{225}{2}$

Hope this helped!

<h3>~AnonymousHelper1807</h3>

5 0

3 years ago

Can anyone explainif knows​

Can anyone explainif knows