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Tema [17]
4 years ago
6

What are metalloids?

Physics
1 answer:
morpeh [17]4 years ago
5 0

Answer:

a type of chemical element whose properties are intermediate between those of metals and nonmetals.

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A garden hose has a radius of 0.0120 m, and water initially comes out at a speed of 2.88m/s. Dasha puts her thumb over the end ,
creativ13 [48]

Answer:

v = 12.4 [m/s]

Explanation:

With the speed and Area information, we can determine the volumetric flow.

V=v*A\\A=\pi *r^{2}

where:

r = radius = 0.0120 [m]

v = 2.88 [m/s]

A=\pi *(0.0120)^{2} \\A=4.523*10^{-4} [m]\\

Therefore the flow is:

V=2.88*4.523*10^{-4} \\V=1.302*10^{-3} [m^{3}/s ]

Despite the fact that you cover the inlet with the finger, the volumetric flow rate is the same.

v=V/A\\v=1.302*10^{-3} /1.05*10^{-4} \\v=12.4[m/s]

3 0
3 years ago
A hydraulic turbine is used to generate power by using the water in a dam. The elevation difference between the free surfaces up
Serjik [45]

Answer:

0.906

Explanation:

Let g = 9.81 m/s2. We can calculate the rate of change in potential energy when m = 201kg of water is falling down a distance of h = 131m per second

\dot{E_p} = \dot{m}gh = 201*9.81*131 = 258307 J/s (W) = 258.307 kW

So the efficiency of the water turbine is the ratio of output power over input power:

\frac{234}{258.307} = 0.906

3 0
4 years ago
Isla’s change in velocity is 30 m/s, and Hazel has the same change in velocity. Which best explains why they would have differen
Mashcka [7]

Answer:

The answer is B) Isla had a different time than hazel

Explanation:

5 0
4 years ago
Around which months does el nino end and la nina start?
ad-work [718]

Answer:

They both tend to develop during the spring (March-June), reach peak intensity during the late autumn or winter (November-February), and then weaken during the spring or early summer (March-June)

3 0
3 years ago
Read 2 more answers
which of the following drives the movement of convection currents A. pressure differences B. density differences C. volume diffe
AlekseyPX
Convection currents are driven by the buoyancy
that results from density differences.
8 0
3 years ago
Read 2 more answers
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