Answer:
D
Explanation:
We must never use a piece of pipe as a leverage extension on the handle on a wrench.
Hence option d is correct.
Temperature. The other three dont have anything to do with determining climate
Answer:
1.49 m/s
Explanation:
The average speed is:
Where v is speed, s is distance and t is time. We are given with a distance of 18 km and time is 3.36 hours.
We'll be converting from km to meters and hours to seconds as standard unit for speed is m/s.
To convert the unit from kilometer to meter, we know that 1 kilometer equals to 1000 meters. Therefore, 18 kilometers will equal to 1000 * 18 meters which will equal to 18000 meters total.
To convert from hour to second, we know that 1 hour equals to 60 minutes. Therefore, 3.36 hours will equal to 60 * 3.36 = 201.6 minutes.
A minute equals to 60 seconds. Therefore, 201.6 minutes equal to 60 * 201.6 = 12096 seconds.
Finally, we have units in meter and second. We'll be able to calculate for average speed now by applying the formula above:
Therefore, Serina's average speed will be around 1.49 m/s
Answer:
T_f = 44 [C]
Explanation:
The following heat transfer equation is used to solve this type of problem.
Q = m*Cp*(T_f - Ti)
Q = 46200 [J]
Cp = 385 [J/kg*C]
m = 5 [kg]
Ti = 20 [C]
Now replacing:
46200 = 5*385*(T_f - 20)
46200 = 1925*T_f - 38500
84700 = 1925*T_f
T_f = 44 [C]