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3 years ago

“Do you think that the role of culture, gender,

Physics

1 answer:

Serjik [45]3 years ago

3 0

Answer:

this is based on your opinion but mine is...

Explanation:

Do you think that the role of culture, gender, and/or race has changed in sclence between the times we are learning about and today's times? If so, how? If not, explain your thoughts?

Yes by how because Race’ cannot be biologically defined due to genetic variation among human individuals and populations. (A) The old concept of the “five races:” African, Asian, European, Native American, and Oceanian. According to this view, variation between the races is large, and thus, the each race is a separate category. Additionally, individual races are thought to have a relatively uniform genetic identity. (B) Actual genetic variation in humans. Human populations do roughly cluster into geographical regions. However, variation between different regions is small, thus blurring the lines between populations. Furthermore, variation within a single region is large, and there is no uniform identity.

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If a person uses about 4 calories to fuel a minute of walking, and it takes about 20 minutes to walk a mile, approximately how m

Lemur [1.5K]

Answer:

43.75 miles must a person walk to utilize the energy in (“burn”) a pound of fat.

Explanation:

3,500 calories are present in 1 pound of the fat.

Thus, given that:

4 calories are burnt in 1 minute of walking.

So,

1 calories are burnt in 1/4 minute of walking.

Or,

1 calories are burnt in 0.25 minute of walking.

Thus,

3500 calories are burnt in 0.25*3500 minutes of walking

Minutes of walking needed to burn 3500 calories = 875 minutes.

Also, given that:

20 minutes of walking covers 1 mile.

1 minute of walking covers 1/20 mile.

So,

875 minutes of walking covers (1/20)*875 mile.

43.75 miles must a person walk to utilize the energy in (“burn”) a pound of fat.

6 0

3 years ago

Find the velocity (in m/s) of a proton that has a momentum of 4.96 X 10^-19 kg.m/s.

kramer

Answer:

The velocity of the proton is $2.965*10^{8} \frac{m}{s}$

Explanation:

The momentum of a particle is defined as the product of its mass by its velocity and we can calculate it using the following formula:

p=m*v Equation (1)

Where:

p: Is the momentum in kg*m/s

m: Is mass of the particle in kg

v: Is the velocity of the particle in m/s

Data known:

m= 1,6726 × 10^–27 kg : mass of the proton

p= 4.96 X 10^-19 kg.m/s.

We replace this data in the Equation (1):

$4,96*10^{-19} =1.6726*10^{-27} *v$ $v=\frac{4.9*10^{-19} }{1.6726*10^{-27} }$

$v=(\frac{4.96}{1.6726} )*(10^{27-19} )$

$v=2,965*10^{8} m/s$

Answer: The velocity of the proton is $2.965*10^{8} \frac{m}{s}$

3 0

3 years ago

Solve this question and give to a detailed step-by-step process as to how you got the answer. Thanks in advance!

m_a_m_a [10]

Answer:

(A)

Explanation:

P1 = MVcos 30

P2 = MVcos 30

️P = -2 mvcos 30

️P = - square root of 3 mv

f1 = 2mv/ ️t

force on the wall = 2

f2 = square root of 3mv/ ️t, so f1 > f2

6 0

3 years ago

Read 2 more answers

How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?

Lana71 [14]

Answer:

685.6 J

Explanation:

The latent heat of vaporization of ammonia is

L = 1371.2 kJ/kg

mass of ammonia, m = 0.0005 Kg

Heat = mass x latent heat of vaporization

H = 0.0005 x 1371.2

H = 0.686 kJ

H = 685.6 J

Thus, the amount of heat required to vaporize the ammonia is 685.6 J.

6 0

3 years ago

sage has a walking speed of 300 feet per minute on the way to gate 14c at the airport sage has the option of using a moving side

nalin [4]

Answer:

2 min 40 s.

Explanation:

Distance = 800 ft

Speed (walking speed) = 300 ft/min

Speed = distance/time

Time, t = 800/300

= 8/3

= 2 min 40 s.

4 0

3 years ago