Answer:
Given the point of maximun electric power of the hair dryer 1500 (w); The circuit breaker won´t trip at all
Explanation:
The most simplyfied relation between power, voltage and current is:
Electric power (in watts) =Voltage (in volts) * current (in ampers)
In the case of P= 1500 (w) and V= 120 (v) we have:
I = 1500/120 (a) = 12,65 (a)
This value is far away of 20 (a) (the nominal trip current
v₀ = initial velocity of the mobile = 10 m/s
v = final velocity of the mobile = 20 m/s
a = acceleration of the mobile = 5 m/s²
d = distance traveled during this operation = ?
Using the kinematics equation
v² = v²₀ + 2 a d
inserting the above values in the equation
20² = 10² + 2 (5) d
400 = 100 + 10 d
subtracting 100 both side
400 - 100 = 100 - 100 + 10 d
300 = 10 d
dividing both side by 10
300/10 = 10 d/10
d = 30 m
hence mobile travels 30 m.
Answer:
For example, a wave with a time period of 2 seconds has a frequency of
1 ÷ 2 = 0.5 Hz.
Explanation:
Specific heat. The definition of specific heat is the amount of energy required to raise the temperature of 1g of a substance by 1K or 1°C.