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Softa [21]
3 years ago
13

The table shows information about four students who are running around a track. Which statement is supported by the information

in the chart?
Chart

vvvvvvvvvvvvvvvvvvvvvv

Autumn 50 kg 4 m/s

Mohammed 57 kg 3 m/s

Lexy 53 kg 3 m/s

Chiang 64 kg 5 m/s



Which statement is supported by the information in the chart?


Autumn has more kinetic energy than Chiang.

Mohammed has less kinetic energy than Autumn. This is the answer. I got tiered of waiting

Lexy has more kinetic energy than Mohammed.

Chiang has less kinetic energy than Lexy.
Physics
2 answers:
murzikaleks [220]3 years ago
7 0

Answer:

Mohammed has less kinetic energy than Autumn

Explanation:

The kinetic energy of each student is given by:

K=\frac{1}{2}mv^2

where

m is the mass of the student

v is the speed of the student

Let's use the formula above to calculate the kinetic energy of each student:

- Autumn: K=\frac{1}{2}(50 kg)(4 m/s)^2=400 J

- Mohammed: K=\frac{1}{2}(57 kg)(3 m/s)^2=256.5 J

- Lexy: K=\frac{1}{2}(53 kg)(3 m/s)^2=238.5 J

- Chiang: K=\frac{1}{2}(64 kg)(5 m/s)^2=800 J

Therefore, by looking at the numbers, we see that the correct answer is

Mohammed has less kinetic energy than Autumn

mafiozo [28]3 years ago
5 0

Answer:

The answer is B. Mohammed has less kinetic energy than Autumn.

Explanation:

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Which of the following is not a greenhouse gas?
Harman [31]

Answer:

The answer is B

Explanation: Greenhouse gases must be able to change their vibrational state in order to absorb infrared radiation or heat. SO therefore helium is not one of them.

Hope this helps:)

6 0
2 years ago
The illuminance due to a 60.0-w lightbulb at 3.0m is 9.35 lx. What is the total luminous flux of the bulb
Furkat [3]
The equation for luminous flux is given as P = 4\pir^{2}E
where P is the luminous flux, r is the distance and E is the illumination. The unit for P is lumen, E is lux and r is in meters. Substituting the given to the equation:

P = 4\pir^{2}E 

P= 4\pi(3)^{2}(9.35) = 1057.46 lumens (lm)

The total luminous flux is equal to 1057.46 lumens (lm).
3 0
3 years ago
When the course deviation indicator (CDI) needle is centered during an omnireceiver check using a VOR test signal (VOT), the omn
lilavasa [31]

Answer:

0° FROM or 180° TO

Explanation:

A course deviation indicator or the CDI may be defined as an avionics tool or instrument that is used in the aircraft navigation which is used to determine an aircraft's lateral position with relation to a course.

While using the VOT service, we should tune the VOT frequency of the VOR receiver. And with the CDI leveled centered, the omnibearing selector or the OBS should read as 0° with the TO/FROM indicator showing 'FROM'. Else the OBS should read as 180° with the TO/FROM indication showing 'TO.'

4 0
3 years ago
Consider a car travelling at 60 km/hr. If the radius of a tire is 25 cm, calculate the angular speed of a point on the outer edg
vlabodo [156]

To solve this problem it is necessary to apply the concepts given in the kinematic equations of movement description.

From the perspective of angular movement, we find the relationship with the tangential movement of velocity through

\omega = \frac{v}{R}

Where,

\omega =Angular velocity

v = Lineal Velocity

R = Radius

At the same time we know that the acceleration is given as the change of speed in a fraction of the time, that is

\alpha = \frac{\omega}{t}

Where

\alpha =Angular acceleration

\omega = Angular velocity

t = Time

Our values are

v = 60\frac{km}{h} (\frac{1h}{3600s})(\frac{1000m}{1km})

v = 16.67m/s

r = 0.25m

t=6s

Replacing at the previous equation we have that the angular velocity is

\omega = \frac{v}{R}

\omega = \frac{ 16.67}{0.25}

\omega = 66.67rad/s

Therefore the angular speed of a point on the outer edge of the tires is 66.67rad/s

At the same time the angular acceleration would be

\alpha = \frac{\omega}{t}

\alpha = \frac{66.67}{6}

\alpha = 11.11rad/s^2

Therefore the angular acceleration of a point on the outer edge of the tires is 11.11rad/s^2

5 0
2 years ago
Which of the following statements describe the transfer of energy a. Collision of atoms causing nuclear reactions B. A car speed
oksano4ka [1.4K]
I think the answer would be A.
8 0
3 years ago
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