Pls help me with this

If 105 J of energy is used in 103 s, what is the average power consumption in watts?

jekas [21]

Power = work/time

P = 105J/103s

P = <span>1.019 watts</span>

4 0

3 years ago

(b) A lift (elevator) in a high building transports 12 passengers, each of mass 65 kg, through a

PSYCHO15rus [73]

Explanation:

P =F * v

F = m * a = 65 kg * 9.81 ms^-2 * 12 passengers

v = d/t = 150m / 64 s

I think you can calculate and substitute this units should be watts

5 0

3 years ago

Why does The human population continue to grow exponentially

svlad2 [7]

Global human population growth is around 75 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7 billion in 2012. Globally, the growth rate of the human population has been declining since 1962 and 1963, when it was 2.20% per annum. In 2009, the estimated annual growth rate was 1.1%. The CIA World Factbook gives the world annual birthrate, mortality rate, and growth rate as 1.89%, 0.79%, and 1.096% respectively. The last 100 years have seen a rapid increase in population due to medical advances and massive increase in agricultural productivity.

6 0

3 years ago

Read 2 more answers

A 350-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,010 A. If the conductor is copper

Masja [62]

Answer:

t = 47 years

Explanation:

To find the number of years in which the electrons cross the complete transmission, you first calculate the drift velocity of the electrons in the transmission line, by using the following formula:

$v_d=\frac{I}{nAq}$ (1)