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3 years ago

Based on its location on the periodic table, which metal is likely to be less reactive than both strontium and sodium?

Physics

2 answers:

QveST [7]3 years ago

6 0

Answer:

Magnesium is the correct answer

Explanation:

It is magnesium because as we move down the periodic table group, atomic sizes increase which is as a result of lesser forces of attraction between nucleus and valence of an atom which makes the atom to be prone to leave as electrons so easily, elements become more reactive.

But as we move along the period , atomic sizes decrease because there is a more force of attraction between nucleus of an atom and it valence electrons making it less reactive just as the case in magnesium. Other elements are more reactive than it across the group.

zlopas [31]3 years ago

6 0

Answer:

Magnesium

Explanation: Correct on edge!

Hope this Helps! :)

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if change in blood pressure between the brain and the feet is 1.88×10^4 pa .what will be the volume flow rate from head to feet

klio [65]

Answer: $3765.66 \frac{m^{3}}{s}$

Explanation:

We can solve this problem using the <u>Poiseuille equation</u>:

$Q=\frac{\pi r^{4}\Delta P}{8\eta L}$

Where:

$Q$ is the Volume flow rate

$r=23 cm \frac{1 m}{100 cm}=0.23 m$ is the effective radius

$L=6 ft \frac{0.3048 m}{1 ft}=1.8288 m$ is the length

$\Delta P=1.88(10)^{4} Pa$ is the difference in pressure

$\eta=3(10)^{-3} Pa.s$ is the viscosity of blood

Solving:

$Q=\frac{\pi (0.23 m)^{4}(1.88(10)^{4} Pa)}{8(3(10)^{-3} Pa.s)(1.8288 m)}$

$Q=3765.66 \frac{m^{3}}{s}$

4 0

4 years ago

How do abiotic and biotic factors in Mono Lake compare to those in the ecosystem in which you live?

Arturiano [62]

Answer:

Biotic factors are the living component of an environment while abiotic factors are the non living component of an environment.

Biotic factors of Mono lake include plants, animals, fungi, algae and bacteria

Abiotic factors of Mono lake include sunlight, temperature, moisture, wind or water currents, soil type, and nutrient availability.

While the biotic and abiotic factors on Land inhabited by humans including Me are :

Biotic factors-Plants ,animals, bacteria

Abiotic factors-Sunlight, heat/ temperature, Climate, weather, water sources.

7 0

3 years ago

Kinetic energy of an object is quadrupled, momentum will change by what factor?

Jlenok [28]

Answer:

So as KE becomes 4times , Momentum will increase by 2 times.

8 0

3 years ago

_heat is the amount of heat required to change the temperature of 1 gram of a substance by 1°C, and it is related to the chemica

Sedaia [141]

Answer:

specific heat

Explanation:

Specific heat is the amount of heat required to change the temperature of 1 gram of a substance by 1°C, and it is related to the chemical composition of the substance

4 0

4 years ago

Read 2 more answers

An object of mass 1.5 kg rests on a shelf where it has a gravitational potential energy of 7 joules. An object of mass 4.5 kg is

bija089 [108]

Answer:

C. 21 Joules

Explanation:

We apply the formula to calculate the potential energy (Ep):

Ep=m*g*h

Where:

Ep : potential energy in Joules (J)

m :mass in kilograms (kg)

g acceleration due to gravity (m/s²)

h: height in meters (m)

Calculation of the height (h)

Ep = m*g*h

7 = (1.5 )*(9.8) *(h )

7 = (14.7) (h )

h = 7 / (14.7)

h= 0.476 m

Gravitational potential energy of the second object

Ep = m*g*h

Ep = (4.5 )*(9.8) *(0.476 )

Ep = 21 J

6 0

4 years ago