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anyanavicka [17]
2 years ago
14

Acceleration due to gravity is stated as a constant which is given 9.8 m/s2. Many scientists have planned and design experiments

to investigate if this value is true or false, and most of the results have concluded that the values of acceleration due to gravity ranges from 9.8 m/s2 to 10 m/s2.
Physics
1 answer:
stich3 [128]2 years ago
3 0
The answer is 98.1 m/s2.
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40 POINTSS. Now explore friction force. Set the piece of plastic or wood on the table and push it steadily across the tabletop u
seraphim [82]

Answer: If there is a higher friction, the opposition force is higher so that it can reduce our speed. So, a factor that affects friction is the roughness or smoothness of the surface of the object. In comparison of the table with the fabric, the fabric will have a more opposition force. As the surface of the fabric is usually rougher than the surface of a smooth table. As there is more friction on a fabric, we will feel more opposition force on our finger tip.

8 0
2 years ago
ametal of mass 0.6kg is heated by an electric heater connected to 15v batter when the ammeter reading is 3A its tempeeature rise
Vedmedyk [2.9K]

Answer:

692 J/kg/°C

Explanation:

Electric energy added = amount of heat

Power × time = mass × SHC × increase in temperature

Pt = mCΔT

(15 V × 3 A) (10 min × 60 s/min) = (0.6 kg) C (85°C − 20°C)

C = 692 J/kg/°C

6 0
3 years ago
are the two sources in phase or out of phase? explain how you can tell from the diagram. if the two sources are out of phase, gi
pychu [463]

If two sources emit waves with the same wavelength and a constant phase difference ϕ, they are said to be coherent.

<h3>What is coherent source ?</h3>
  • If the frequency and waveform of two wave sources are the same, they are coherent. Waves' optimal quality of coherence makes stationary interference possible.
  • When the phase difference between two beams of light is constant, they are coherent; if the phase difference is random or changes, they are noncoherent.
  • The concept of a superpositioning at the core of quantum physics and quantum computing is referred to as "quantum coherence." Quantum coherence specifically considers a scenario in which a wave property of an item is split in two and the two waves coherently interfere with one another.
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To learn more about coherent refer :

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4 0
1 year ago
What is the speed of a bobsled whose distance-time graph indicates that it traveled 116m in 29s?
ryzh [129]
Speed = Distance ÷ Time
Speed = 116 ÷ 29
Speed = 4
5 0
3 years ago
Read 2 more answers
A car slid off an icy 10m bridge and landed 12m away from the bridge. How much time was the car in the air? (Hunt: Projectile)
Contact [7]

You will use the height of the bridge from the ground.

Solution:

Formula to be used is y=Viy(t)+g(t^2)/2

Where:

Vi=initial velocity which is 0 m/s

 y=10 m

Gravitational acceleration or g =9.8m/s^2

T= time you need

Substitute all the given to the formula

10m=(0m/s)(t)+(9.8m/s^2)(t^2)/2

10mx2=9.8m/s^2(t^2)

Now isolate the variable you want to find which is T or time

10mx2/9.8m/s^2=t^2

20m/9.8m/s^2=t^2

Square root of 2.04= square root of t^2

T=1.43 secs

The answer is 1.43 seconds

8 0
3 years ago
Read 2 more answers
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