3 years ago

Liệt kê 10 quá trình sản xuất trong công nghiệp có sử dụng chất xúc tác

Engineering

1 answer:

Ugo [173]3 years ago

3 0

Answer: English please!

Explanation:

You might be interested in

Toggle the supports back on. With the 20 kg mass still in the same position, iterate the position and amount of mass on the righ

melisa1 [442]

see its about torque you know:

If we put 5 kg on right after removing 20kg then :

Torque =(perpendicular component of force vector ) X (distance from the axis )

for rotational equilibrium Torque should be balanced.

Now we calculate torque /

6 0

3 years ago

A 15,000 kg satellite is orbiting at 800 km above the Earth’s surface. What is the potential energy of the satellite?

vredina [299]

Answer:

$-8.34\times 10^{11}\ \text{J}$

Explanation:

m = Mass of satellite = 15000 kg

h = Distance above Earth = 800 km

R = Radius of Earth = 6371 km

M = Mass of Earth = $5.972\times 10^{24}\ \text{kg}$

G = Gravitational constant = $6.674\times 10^{-11}\ \text{Nm}^2/\text{kg}^2$

Potential energy is given by

$U=-\dfrac{GMm}{R+h}\\\Rightarrow U=-\dfrac{6.674\times 10^{-11}\times 5.972\times 10^{24}\times 15000}{(6371+800)\times 10^3}\\\Rightarrow U=-8.34\times 10^{11}\ \text{J}$

The potential energy of the satellite is $-8.34\times 10^{11}\ \text{J}$ .

6 0

3 years ago

Write code that inserts userItems into the output string stream itemsOSS until the user enters "Exit". Each item should be follo

lozanna [386]

Answer:

Peppa Pig

Explanation:

3 0

3 years ago

A basketball is filled with atmospheric air. What percent of air mass of the same temperature must be added to the ball to incre

Oliga [24]

Answer:

26 % of mass is added.

Explanation:

We know that

P V = m R T ------1

P=Pressure

V=Volume

R= Gas constant

T= Temperature

m=Mass

Lets mass added =m'

P'=1.2 P

V'=1.05 V

P' V' = m' R T

1.26 P V = m' R T --------2

Form equation 1 and 2

1.26 = m' /m

m' = 1.26 m

Mass added = m' - m

Δ m = 1.26 m - m = 0.26 m

So percentage of mass added = Δ m /m

=0.26

We can say that 26 % of mass is added.

8 0

4 years ago

Add (6x^2-2x) + (5x-7)

Jlenok [28]

The answer would be 6x^2 +3x-7

5 0

3 years ago

Read 2 more answers