What is dark matter?

Physics

2 answers:

erastova [34]3 years ago

8 0

<span>Dark matter is a hypothetical type of matter distinct from baryonic matter, neutrinos and dark energy.</span>

Alinara [238K]3 years ago

5 0

<span>Dark matter is a type of matter distinct from baryonic matter</span>

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A box of mass 14 kg sits on an inclined surface with an angle of 52degrees. What is the component of the weight of the box along

kolezko [41]

First, we calculate for the weight of the object by multiplying the given mass by the acceleration due to gravity which is equal to 9.8 m/s²
Weight = (14 kg)(9.8 m/s²)
Weight = 137.2 N
The component of the weight that is along the surface of the inclined plane is equal to this weight times the sine of the given angle.
Weight = (137.2 N)(sin 52°)
weight = 108.1 N

5 0

3 years ago

Read 2 more answers

This problem follows up on a discussion from lecture. A wind turbine with an efficiency of 45% for converting wind energy into e

Volgvan

Answer:

4.1 m

Explanation:

10 kW = 10000 W

20mi/h = 20*1.6 km/mi = 32 km/h = 32 * 1000 (m/km) *(1/3600) hr/s = 8.89 m/s

The power yielded by the wind turbine can be calculated using the following formula

$P = \frac{1}{2} \rho v^3 A C_p$