1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frosja888 [35]
3 years ago
11

) In the calibration step of a thermochemistry experiment, a current of 117 mA, from a 24.0 V source was allowed to flow through

the electrical heater for 247 s and was found to result in an increase in the temperature of the calorimeter and its contents of +1.25 K. Calculate the heat capacity of the calorimeter and its contents
Physics
1 answer:
GarryVolchara [31]3 years ago
5 0

Answer:

Explanation:

Heat energy supplied = IVt where I = current = 117 A / 1000 = 0.117 A

V = 24 V and t, time = 247 s

Heat energy supplied = 0.117 A × 24V × 247s = 693.576 J

Heat capacity = quantity of heat supplied / rise in temperature

Heat capacity = 693.576 J / 1.25 K = 554.86 J/K

You might be interested in
A projectile is shot on level ground with a
erastova [34]

Answer:

time rising = 34 / 9.8 = 3.47 sec

total time in air = 2 * 3.47 sec = 6.94 sec

(time rising must equal time falling)

R = 17 m/s * 6.94 s = 118 m

Can also use range formula

R = v^2 sin (2 theta) / g

tan theta = 34 / 17 = 2

theta = 63.4 deg

2 theta = 126.9 deg

sin 126.9 = .8

v^2 = 17^2 + 34^2 = 1445 m^2/s^2

R = 1445 * .8 / 9.8 = 118 m    agreeing with answer found above

5 0
3 years ago
Two point charges are separated by a distance of 1 meter. How much would the force change if one charge was 4x larger?
jekas [21]

Answer:

the force would increase 4 times more

Explanation

more force results more mass or acceleration

6 0
2 years ago
Read 2 more answers
A certain mass of a gas occupies 2 litres at 27 °C and 100
Zielflug [23.3K]

Answer:

75k

Explanation:

You can see solution in the picture

3 0
3 years ago
The tilt of the Earth's axis of rotation changes from approximately 22.5° to 24.5° over a period of 41,000 years. This causes gl
kompoz [17]
<span>b. less climatic variation between the summer and winter seasons in the middle and high latitudes

As the tilt becomes higher (approaches 24 degrees) there is greater variation between the summer and winter months, due to the fact that the tilt toward the sun in the summer and away from the sun in the winter are more pronounced. </span>
3 0
3 years ago
Read 2 more answers
When we look up at the stars, we are seeing the future", is this astronomer correct ? Why or why not ?
Andrei [34K]

Answer:

if the stars connect to a thing, then it describes.

7 0
3 years ago
Other questions:
  • A soccer ball is kicked with an initial horizontal velocity of 12 m/s and an initial vertical velocity of 19 m/s. 1 what is the
    10·1 answer
  • Explain in detail what causes tides and give one reason why it is important for humans to monitor tides.
    6·2 answers
  • An electron moving in the direction of the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in
    15·1 answer
  • If you walked 29752 meters in 2.00 hours what would your average speed be in m/s. Then, suppose you slow down to 3.00 m/s at the
    12·1 answer
  • Earth's gravitational pull just got threetimes stronger! what happens to your weight/
    9·1 answer
  • In which situation would a space probe most likely experience centripetal acceleration?
    14·1 answer
  • How far is the region from the equator or helps control climate
    7·1 answer
  • 2 someone was described in a novel as riding off into the sunset," then they'd be travelling west. o True o False ​
    7·1 answer
  • Why do we "call it a day" when it's the end of the day/ night time?
    13·2 answers
  • Which of the following would be the magnitude of the vector given a horizontal component of 30 and a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!