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3 years ago

Which system of units is used by only a small number of countries in the world, including the u.s

Physics

2 answers:

Len [333]3 years ago

3 0

Answer:

imperial system

Explanation:

rjkz [21]3 years ago

3 0

Answer:

british system

Explanation:

A P E X

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An objects speed is 2.40 m/s, and its momentum is 120.0 kg m/s. what is the mass of the object?

jarptica [38.1K]

Momentum is defined as

P = m*v

where m is the mass of the object
and v is the speed of the object

We find m.............> m = P/v = 120 [kg.m/s] / 2.4 [m/s] = 50 kg

The mass is 50 kg

4 0

4 years ago

) Water flows through a horizontal coil heated from the outside by high-temperature flue gases. As it passes through the coil th

Mademuasel [1]

Explanation:

Formula for steady flow energy equation for the flow of fluid is as follows.

$m[h_{1} + \frac{V^{2}_{1}}{2}] + z_{1}g] + q = m[h_{1} + \frac{V^{2}_{1}}{2} + z_{1}g] + w$

Now, we will substitute 0 for both $z_{1}$ and $z_{2}$ , 0 for w, 334.9 kJ/kg for $h_{1}$ , 2726.5 kJ/kg for $h_{2}$ , 5 m/s for $V_{1}$ and 220 m/s for $V_{2}$ .

Putting the given values into the above formula as follows.

$m[h_{1} + \frac{V^{2}_{1}}{2}] + z_{1}g] + q = m[h_{1} + \frac{V^{2}_{1}}{2} + z_{1}g] + w$

$1 \times [334.9 \times 10^{3} J/kg + \frac{(5 m/s)^{2}}{2} + 0] + q = 1 \times [2726.5 \times 10^{3} + \frac{(220 m/s)^{2}}{2} + 0] + 0$

q = 6597.711 kJ

Thus, we can conclude that heat transferred through the coil per unit mass of water is 6597.711 kJ.

6 0

4 years ago

The rate at which work is done is known as which of the following?

sveta [45]

Answer:

A , power

Explanation:

Hope this is useful. Have a lovely rest of your day! God bless you.

3 0

3 years ago

4.A balloon containing an ideal gas sits in a constant pressure chamber. The temperature of the chamber is raised from 275 K to

Natalka [10]

To solve this problem, we must take into account the equation:

$PV=nRT$

So, for an isobaric transformation (constant pressure), an increase in volume generates an increase in temperature. This can be written as:

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$ $\frac{0.03}{275}=\frac{V_2}{375}\Rightarrow V_2=\frac{0.03*375}{275}=0.04091m^3$

Thus, the new volume will be 0.04091m^3

8 0

1 year ago

Advances in agriculture ________. Group of answer choices

Angelina_Jolie [31]

Answer:

4. since they are based on natural ecosystems have often resulted in alteration and destruction of natural systems

Explanation:

this is because agriculture leads to loss of habitats, loss of nutrients from the soil, it has also lead to the use of chemicals which are harmful to the environment as pesticides, and all this destroys natural systems

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4 years ago