Answer:
The net force is 392N, pointing down.
Explanation:
The net force is the sum of all forces acting on the rock, namely the gravity ("+" acting downward) and the friction force due to air resistance ("-" acting upward):
The net force is 392N and pointing down (positive)/
Answer:
P₁ = 192 W and P₂ = 384 W
Explanation:
It is given that,
Resistor 1,
Resistor 2,
Voltage, V = 48 V
Power dissipated by resistor 1 is given by :
P₁ = 192 watts
Power dissipated by resistor 2 is given by :
P₂ = 384 watts
So, the power dissipated by both the resistors is 192 watts and 384 watts respectively. Hence, this is the required solution.
The correct answer is C) towards the center of the circle.
Although the object is moving at a constant speed it is constantly accelerating due to the constant change in direction as it describes the circular path. This causes a constant change in velocity as velocity is a vector quantity.
For the object to maintain the circular path there has to be centripetal force acting on the object and this centripetal force is directed towards the center of the circle.
Answer:
calorie
Explanation:
Calories are a unit of measure based on the specific heat of water and express the energy power of food.
Most people confuse the term calorie with kilocalorie, the right thing is to express the energy of food in kilocalories (kcal).
-
A calorie <u>is the amount of energy needed to raise the temperature of 1 gram of water to 1 ° C.
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- A kilocalorie is the amount of energy needed to raise the temperature of 1 kilogram of water to 1ºC, therefore, one kilocalorie equals one thousand calories.
- One kilocalorie equals 4,185 kiloJoules.