The colder the more likely it is to become a liquid
Explanation:
the formula for momentum is denoted by p=mv where p is momentum, m is mass and v is velocity. thus, the velocity before impact would be 0.060 x 30 = 1.8 kg/ms
the second one would just be 0.060 x 20 0.72kg/ms
I'm not 100 percent sure this is correct but yeah
Nowadays, most of the walkie talkies ... and all R/C models ... operate in the "Family Radio Service" (FRS) band. That's 46-49 MHz. The wavelength is 6.12-6.52 meters.
Answer:
a) 
b) 
c) 
Explanation:
Given:
- voltage of the battery,
- energy storage capacity of the battery,
- speed of the car,
a)
power drawn by the car, 
<u>Now the Current delivered to the motor:</u>
we the relation between the power and electrical current,
b)
<u>Distance travelled before battery is out of juice:</u>
we first find the time before the battery runs out,
Now the distance:
c)
When the head light of 55 W power is kept on while moving then the power consumption of the car is:
<u>Now the time of operation of the car:</u>
<u>Now the distance travelled:</u>
Answer:
$84
Explanation:
The coefficient of performance (COP) show the relationship between the power (kW) output of the heat pump and the power (kW) input to the compressor.
The heater consumed by the heater is 1200 kWh.
For a heat pump with a COP of 2.4, the electric input needed to produce an output of 1200 kWh is:
Electric input to heat pump = 1200 / 2.4 = 500 kWh
That means that supplying a heat pump with 500 kWh produces an output of 1200 kWh
The amount of power saved = power consumed by heater - power consumed by heat pump = 1200 - 500 = 700 kWh
Money saved = $0.12/kWh * 700 kWh = $84
