Meaning of life ....
condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.
We need to use the formula P = IV, where P is the power, I is the current and V is the voltage.
When we substitute our values in, we get:
100 = 240I, and so I = 0.42 Amps
Now, we have to work out the Resistance in the circuit at the operating temperature.
We do this using the formula V = IR
240 = (100/240) x R, and we get R = 576 Ohms
Since the resistance has gone up by a factor of 16, all we have to do now is to divide this answer by 16 to get the resistance at room temperature.
576/16 = 36 Ohms
Hope I helped!! xx
Answer:
The one with highest velocity
Explanation:
The momentum of an object is given by
where
m is the mass of the car
v is the velocity of the car
In this problem, we have two identical cars: identical means they have same mass, so
The momentum of car 1 is
while the momentum of car 2 is
By comparing the two expressions, we see that the car with greatest momentum is the one with highest velocity, since the mass is the same.
Answer:
A
Explanation:
Think about rubbing your hands together- the friciton produces heat
Answer:
P = 2161 N
Explanation:
For this exercise, let's start with Newton's second law
P - W = m a
P = ma + W
Where P is the fin force, W the weight,
Let's look for the vertical acceleration of the fish, this goes from a vertical speed of zero to a speed of 6.20 m / s when it has traveled half its length 1.50
y = 0.75 m
v² = v₀ + 2 a y
a = v² / 2 y
a = 6.20²/2 0.75
a = 25.63 m / s
We substitute in Newton's second law
P = m (g + a)
Let's calculate
P = 61.0 (0 9.8 + 25.63)
P = 2161 N
