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Darina [25.2K]
3 years ago
10

a water pump takes water through 12m. Water is discharged at the surface at the rate of 2Kg/s, and the discharge speed of each d

rop is 3m/s. Find the minimum power of the pump​
Physics
1 answer:
pickupchik [31]3 years ago
3 0

Answer:

45

Explanation:

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it takes you 9.5 min to walk with an average velocity of 1.2m/s to the north from the bus stop to the museum entrance. what is y
MAVERICK [17]

Answer:

x=684m

Explanation:

v=velocity

x=displacement

t=time

equation: v=x/t

v=1.2m/s

x=?

t=9.5min=570s

1.2=x/570

570*1.2=x/570*570

x=684m

3 0
3 years ago
The age of the universe in seconds
Marianna [84]

Answer:

4.351968e+17 seconds

Explanation:

So I googled age of the universe and it says 13.8 billion years.

you'll have to do some conversions:

in one year, there are 365 days. in one day, there are 24 hours. in one hour, there are 3600 seconds.

\frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}

so you have to add in the current age of the universe to that equation:

\frac{x seconds}{13.8 bil years} x \frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}

arranged so that the proper "units" will read as "x seconds" at the end of the equation.

then you do the math to find x:

13.8 billion x 365 x 24 x 3600 = 4.351968e+17 seconds.

which would be 435,196,800,000,000,000 seconds

Hope this helps :)

7 0
4 years ago
you hold a metal block of mass 40 kg above your head at a height of 2 m how much work is done bu gravity if you let the block fa
zzz [600]

Answer:

784 J

Explanation:

Work is force times distance.

W = Fd

W = mgd

W = (40 kg) (9.8 m/s²) (2 m)

W = 784 J

8 0
4 years ago
Witch is the property of matter in witch a substance can transfer heat or electricity
saw5 [17]

Answer:

B. Conductivity.

Explanation:

Conductivity is the quantity of heat passing per second through a slab of unit cross-sectional area when the temperature gradient between the two faces is unity when put in heat.

4 0
4 years ago
Can someone please help me? :(
Vesna [10]

Answer:something empty depressed

Explanation:

8 0
1 year ago
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