3 years ago

Thermal conduction mostly involves the motion of

Physics

1 answer:

Iteru [2.4K]3 years ago

7 0

Thermal conduction mostly involves the motion of
ELECTRONS

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.2, A car starting from rest has an acceleration of

riadik2000 [5.3K]

Answer: 2.5 m/s and 6.25 m

Explanation:

u = 0

a = 0.5 m/s²

t = 5 s

v = u + at

= 0 + 0.5 × 5

= <u>2.5 m/s</u>

s = ut + 1/2 at²

= 1/2 × 2.5 × 5

=<u> 6.25 m</u>

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4 years ago

What is the main source of fuel for cellular respiration?

Tamiku [17]

The primary source of fuel for cellular is glucose, but oxygen is also utilized. Hope this helps! :)

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3 years ago

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1000 kg has 50, 000 joules of kinetic energy. what is it's speed?

kicyunya [14]

The answer is 36 kilometers per hour, or 10 meters per second.

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3 years ago

A German Shepherd takes 4 hours to cover a distance, if it travels at a speed of 36mph. What should be its speed to cover the sa

agasfer [191]

Answer:

v₂ = 48 mph

Explanation:

We know that,

Speed = distance/time

A German Shepherd takes 4 hours to cover a distance, if it travels at a speed of 36mph.

We need to find the speed to cover the same distance in 3 hours.

$\dfrac{v_1}{v_2}=\dfrac{t_2}{t_1}\\\\v_2=\dfrac{v_1t_1}{t_2}\\\\v_2=\dfrac{36\times 4}{3}\\\\v_2=48\ mph$

So, the new speed is 48 mph.

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3 years ago

Assume that Young’s modulus for a new material is known to be 2.25 × 1011 /2

Lady bird [3.3K]

Answer:

Maximum force, $F_{max} = 42 kN$

Explanation:

Maximum Stress, $\sigma_{max} = 2.1 * 10^{7} N/m^{2}$

The diameter of the material, d = 50.5 mm = 0.0505 m

The area of the material, $A = (\pi d^{2} )/4$

$A = \frac{\pi * 0.0505^{2} }{4} \\A = 0.002 m^{2}$

The formula for the maximum stress that the material can take is given by:

$\sigma_{max} = \frac{F_{max} }{A} \\2.1 * 10^7 = \frac{F_{max} }{0.002}\\F_{max} = 2.1 * 10^7 * 0.002\\F_{max} = 4.2 * 10^4 N\\F_{max} = 42 kN$

4 0

3 years ago