Answer:
5.03×10¯⁷ N
Explanation:
From the question given above, the following data were obtained:
Mass of the person (M₁) = 55 Kg
Mass of the car (M₂) = 1234 Kg
Distance apart (r) = 3 m
Gravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²
Force (F) =?
The force between the person and his car can be obtained as follow:
F = GM₁M₂ / r²
F = 6.673×10¯¹¹ × 55 × 1234 / 3²
F = 6.673×10¯¹¹ × 67870/ 9
F = 5.03×10¯⁷ N
Thus, the force between the person and his car is 5.03×10¯⁷ N
Answer:
Universe contains galaxies, stars and planets.
Explanation:
The Universe is the assumed to be made of three different kind of matters which is
1- Dark matter ( 25 %)
2-Normal matter (5%)
3- Dark energy (70%)
The Universe has billions of galaxies in it, each one of galaxy has planets and millions of stars. It is the collection of everything that exist in the space including clouds of gas and vast empty spaces between planets and stars.
Scientists follow specific processes in order to determine valid explanations and conclusions from observations and research any and all data pertaining to the Roswell area, and unidentified flying objects reported in the sky.
The term UFO means unidentified flying object and David observed strange lights in the sky above his home outside of Roswell, New Mexico. The only explanation that makes sense to him is that there are UFOs in the area and and research any and all data pertaining to the Roswell area, and unidentified flying objects reported in the sky.
The text purpose has been refers to the aim and reason which an author writes the text and the things which he wants his readers to learn from the text.
With this in mind, we can see that from the complete text, there has been the narration of UFOs which are Unidentified Flying Objects which are popularly known as aliens and the text purpose is to inform.
Therefore, Scientists follow specific processes in order to determine valid explanations and conclusions from observations and research any and all data pertaining to the Roswell area, and unidentified flying objects reported in the sky.
Learn more about Unidentified Flying Objects on:
#SPJ2
Research any and all data pertaining to the Roswell area, and unidentified flying objects reported in the sky
This is the Correct Answer is B
Edgen Approved :)
wire has a resistance of 1.3 ohms. The crosssectional
area of this wire is
(1) 7.9 × 10^−8 m2 (3) 4.6 × 10^0 m2
(2) 1.1 × 10^−7 m2 (4) 1.3 × 10^7 m2
The cross-sectional area of the copper wire is which has 1.3 ohm at 20 degree Celsius during laboratory experiment by student is 7.9×10⁻⁸ ohm.
Resistance is obstacle for the current flow in the circuit. It is the measure of reverse act to current flow in through a material. It can be given as,
Here, (ρ) is the specific resistance (l) is the length of the wire and (A) is the cross-sectional area of the wire.
During a laboratory experiment, the student finds that at 20° Celsius, a 6.0-meter length of copper wire has a resistance of 1.3 ohms.
The value of resistivity of copper wire is 1.72×10⁻⁸ ohm-m. Put these values in the above formula as,
Thus, the cross-sectional area of the copper wire is which has 1.3 ohm at 20 degree Celsius during laboratory experiment by student is 7.9×10⁻⁸ ohm.
Learn more about the resistance here;
ρ = resistivity of copper at 20 °C = 1.72 x 10⁻⁸ ohm-m
R = resistance of the copper wire = 1.3 ohm
L = length of the copper wire = 6 meter
A = area of cross-section of the copper wire = ?
Resistivity of copper wire is given as
R = ρL/A
inserting the values in the above equation
1.3 = (1.72 x 10⁻⁸) (6)/A
A = 7.9 x 10⁻⁸ m²
Hence the correct choice is
(1) 7.9 x 10⁻⁸ m²
50 km
70 km
cannot be determined
Answer:
The answer is 70 km
Explanation:
Firstly, there are few facts that we have to know:
Finally, the first 25 min the car traveled in total 30 km and after that, the car traveled in total 40 km during 35 min. So, the total distance is:
30+40=70 km.
makes motor vehicle move faster?
a) 0
b) 11
c) 2
d) 3
e) 4
Answer:
e.4
Explanation:
3,600 RPM
3,200 RPM
3,400 RPM
3,000 RPM
Sequence
<
<
<
with the same generator, so the only factor for producing the slectric field is only the speed. The faster the rotational speed of the generator the greater it produce electric field. So the sequence is 3000 rpm < 3200 rpm < 3400 rpm < 3600 rpm
Answer: 3000
3200
3400
3600
Explanation: just took the test 5 out of 5