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3 years ago

What is mass number

Physics

2 answers:

Mazyrski [523]3 years ago

6 0

Answer:

the total number of protons and neutrons in an atom

laila [671]3 years ago

4 0

Answer:

the number of protons and neutrons together make up the mass number of am element

hope it helps you

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The environmental and economic benefits of hydroelectricity, giving examples from the case studies and

vredina [299]

Answer:

Review the explanation.

Explanation:

Hydropower does not generate CO2 emissions, therefore it is not a factor in the generation of global warming. The initial investment of this type of projects in construction is large but this investment can be recovered in the future, since the system guarantees reliability in the supply of energy. It generates employment as technical and engineering personnel are needed for the operation of each of the equipment that is part of the hydroelectric plant.

As for the defects, is that most hydropower should be located near rivers, therefore to access the construction of this project must cut trees and remove animals from their natural habitat.

3 0

2 years ago

Read 2 more answers

A carver begins work on the following block of granite that weighs 2700 g. The dimensions of the block are 20 cm, 5 cm and 10 cm

CaHeK987 [17]

Answer:

$\text { "Density" of the given granite block is } 2.7 \mathrm{g} / \mathrm{cm}^{3} \text { . }$

Explanation:

Density of an object is defined as the mass occupied per unit volume. “Density” is represented by “ρ”. Mathematically, $\rho=\frac{m}{v}$ where, “m" mass of an object and "v" is volume of an object.

Given that,

Dimensions of the block are 20 cm, 5 cm and 10 cm.

$\text { Volume of the block is } l \times b \times h$

$\text { Volume of the block is } 20 \times 5 \times 10$

$\text { Volume of the block is } 1000 \mathrm{cm}^{3} \text { . }$

Mass of the block is 2700 g.

Substitute the given values in $\rho=\frac{m}{v}$ to find density of a block.

$\rho=\frac{2700}{1000}$

$\rho=2.7 \mathrm{g} / \mathrm{cm}^{3}$

$\text { "Density" of the given granite block is } 2.7 \mathrm{g} / \mathrm{cm}^{3}$

6 0

3 years ago

. A box is pushed across the floor for a distance of 5 meters with a force of 50 Newtons in 5 seconds.

Marysya12 [62]

Answer:The total amount of work is

W = F × s (force x distance)

Explanation: Explanation:

250

Done in 5 seconds the power is

where

=time

250

6 0

2 years ago

Which two fundamental forces are only attractive?

MA_775_DIABLO [31]

Answer:

B. Strong and gravitational nuclear

Explanation:

I don't really know how to explain it

3 0

3 years ago

Read 2 more answers

X-rays are scattered from electrons in a carbon target. the measured wavelength shift is 0.00087 nm. calculate the scattering an

slava [35]

The scattering angle is: θ = 50.1°

Explanation:

As the Compton's Shift is given as:
Δλ = (h(1-cosθ))/m₀c --- (1)

Where
h/m₀c = 2.426 * 10^-3 nm
Δλ = 0.00087 nm (Given)

Plug in the values in the equation (1) and solve for θ:
θ = $cos^{-1}(0.641)$
θ = 50.1°

3 0

3 years ago