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Anika [276]
3 years ago
11

-. What is biomass energy

Physics
1 answer:
Tanya [424]3 years ago
7 0

a renewable energy source from living or recently living plant and animal materials which can be used as fuel. An example of biomass is plant material that produces electricity with steam. An example of biomass is animal fossil fuel.

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Communication with submerged submarines via radio waves is difficult because seawater is conductive and absorbs electromagnetic
REY [17]

Answer:

\lambda=4000\ km

Explanation:

It is given that,

Frequency for submarine communications, f = 76 Hz

We need to find the wavelength of those extremely low-frequency waves. the relation between the wavelength and the frequency is given by :

c=f\times \lambda

\lambda=\dfrac{c}{f}

\lambda=\dfrac{3\times 10^8\ m/s}{76\ Hz}

\lambda=3947368.42\ m

\lambda=3947\ km

or

\lambda=4000\ km

So, the wavelength of those extremely low-frequency waves is 4000 km. Hence, this is the required solution.

4 0
3 years ago
A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. Since a lot of damage is done on the car : Sel
Anni [7]

Answer:

d)

Explanation:

Newton's 3rd Law tells us that for every action we will have a reaction equal in magnitude and opposite in direction. In a collision between obects A and B this means that the force on A applied by B will be equal in magnitude than the force on B applied by A, which leaves d as the true answer and the rest as false.

8 0
3 years ago
Why is the specific heat of water important to our planet?
katen-ka-za [31]
Because heat keeps us warm and water hydrates the planet i guess?????
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3 0
3 years ago
Read 2 more answers
you slide across home plate during baseball game. If you have a mass of 82 kg, and the coefficient of kinetic friction between y
Tju [1.3M]

m = mass of the person = 82 kg

g = acceleration due to gravity acting on the person = 9.8 m/s²

F = normal force by the surface on the person

f = kinetic frictional force acting on the person by the surface

μ = Coefficient of kinetic friction = 0.45

The normal force by the surface in upward direction balances the weight of the person in down direction , hence

F = mg                                          eq-1

kinetic frictional force on the person acting is given as

f = μ F

using eq-1

f = μ mg

inserting the values

f = (0.45) (82) (9.8)

f = 361.6 N

8 0
3 years ago
Read 2 more answers
A night-light uses 3 W. If the voltage is 120 V, what is the current?​
34kurt

Answer:

0,025

Explanation:

p = i \times v \\ 3 = i \times 120 \\ i =  \frac{3}{120}  \\ i = 0.025

4 0
3 years ago
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