UNIT
Sample readings
Use your own results if possible, but if not make use of these
sampl...
![subject](/tpl/images/cats/fizika.png)
Physics, 24.05.2021 14:30 megancrader11
UNIT
Sample readings
Use your own results if possible, but if not make use of these
sample readings
Mass of water being heated = 100 g
Starting temperature of cold water = 22°C
Steady current I through heater = 1.5 A
Steady p. d. V across heater = 12.0V
Total time t of heating = 10 min = 600 s
Final temperature of warm water = 47°C
Analysing the readings
1. What is the power of the heater (in watts)?
2. How many joules of heat energy did the heater supply in total?
3. Through how many degrees C did this energy warm the
100 g of water?
4. How much energy, therefore, was needed to warm 1 kg of
water by 1°C?
​
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:30
Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:00
Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:00
Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 21:30
Global climatic patterns are changing because of the melting of polar ice caps. the melting of polar ice caps is an example of the interaction between the atmosphere and cryosphere cryosphere and geosphere hydrosphere and geosphere biosphere and cryosphere
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.10.2019 00:40
![question](/tpl/images/cats/mat.png)
Mathematics, 09.10.2019 00:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 09.10.2019 00:40
![question](/tpl/images/cats/biologiya.png)
Biology, 09.10.2019 00:40
![question](/tpl/images/cats/mat.png)
Mathematics, 09.10.2019 00:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 09.10.2019 00:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 09.10.2019 00:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.10.2019 00:50
![question](/tpl/images/cats/fizika.png)
Physics, 09.10.2019 00:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 09.10.2019 00:50