1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
EastWind [94]
2 years ago
6

If the force acting on a body of mass 40 k.g is doubled by how much will the acceleration change​

Physics
1 answer:
disa [49]2 years ago
7 0

Answer:

Explanation:

Ignoring friction, the acceleration will double

F = ma

2F = m(2a)

You might be interested in
If the frequency of the incoming light is increased, will the energy of the ejected electrons increase, decrease, or stay the sa
Arlecino [84]

Answer:

increase

Explanation:

According to Einstein's photoelectric equation; the energy of a photon striking a metal surface is related to the kinetic energy of the ejected photoelectron by the formula;

KE= hf - hfo

Where h is the planks constant, f and fo refer to the frequency of incident photon and the threshold frequency respectively.

Hence, we can clearly see from the foregoing that the kinetic energy of the ejected photoelectron is proportional to the frequency of the incident photon.

Hence, if the frequency of the incident photon is increased, the kinetic energy of the ejected photoelectron increases also.

3 0
2 years ago
please help me with my question I will like and mark as brainliest NO LINKS THEY DON'T WORK AND IF U DON'T KNOW THE ANSWER PLS D
bearhunter [10]

Answer:

a)

Weight in Air = 0.3N

Weight in Water = 0.25N

Weight in Liquid = 0.24N.

Upthrust /Buoyant Force = Weight in Air – Weight in Fluid(Water in this case)

= 0.3 – 0.25

= 0.5N.

b) R.D of Body = Density of Body/Density of Standard Fluid(Water).

There's a Derived Formula for RD.

I'm gonna Apply it here.

Ask me for the derivation in the Comment section if you need it.

RD = α/ρ = (Weight in Air) / (Upthrust Force)

Where

α = density of the Body(or reference substance)

ρ = density of standard fluid (water)

= 0.3/0.05 = 6.

c) RD of Liquid = (Density of Liquid) /(Density of standard Fluid(water)

Or we just go by that formula

RD of Liquid = Weight in Air/Upthrust(In Liquid)

We'll be using the Upthrust in that Liquid now.

= 0.3 – 0.24 = 0.06

RD = 0.3/0.06 = 5.

7 0
2 years ago
On January 22, 1943, the temperature in Spearfish, South Dakota, rose from −4°F to 45°F in just 2 minutes. What was the temperat
Nimfa-mama [501]
The answer is the first one
4 0
2 years ago
An electron acquires 13.0 × 10-16 j of kinetic energy when it is accelerated by an electric field from plate a to plate
andre [41]

solution:

the kinetic energy acquired by the electron when it is accelerated y an electric field is

k=5.25\times10^-16j

the kinetic energy acquired by the electron will ne proportional to the potential difference between the plates across which the electric field is applied.it is given by,

e\Delta v = k

here,\delta v is the potential difference between the plates, e is the charge on an electron and k is the kinetic energy.

reassange the above expression

\delta v = \frac{k}{e}

the potential difference between the plates will be  

\delta v = \frac{k}{e}

sunstitute 5.25 \times 10^-16j for k and 1.6 \times10^-19c for e is the above equation

\delta v =\frac{5.25\times10^-16j}{1.60\times10^-19c}

=3.28\times10^3v(\frac{1kv}{1000v})

=3.28kv

since the electrons will e accelerated towards the plate at higher potential.

hance p;ate b will be at higher potential

3 0
3 years ago
Helppp pliss.............
Serggg [28]

i don't know sorry

free to comment if you know the answer

8 0
3 years ago
Other questions:
  • Sarah moves her box in 3 minutes and does 14 J of work. John moves his box in the same amount of time using 12 J of work. Who is
    7·2 answers
  • A strip of copper metal is placed in an aqueous sodium chloride solution. According to the standard reduction potential below, w
    10·1 answer
  • An airplane flies 1760 km in 2 hours 45 minutes. What is its average speed in kilometers per hour?
    5·1 answer
  • What is the wavelength of an earthquake wave if it has a speed of 9 km/s and a frequency of 2 Hz?
    10·1 answer
  • Does plants have prokaryotic cells?
    10·2 answers
  • How far can a person run in 13.22 minutes if he or she runs at an average speed of 12.33 km/hr?
    5·2 answers
  • What evidence is there that the universe is expanding?
    12·2 answers
  • Pls help guys this is my 7th time posting XD​
    7·2 answers
  • 전기를 사용하여 다른 재료에 원하는 금속 층을 증착하는 과정을 ____라고 합니다.
    12·1 answer
  • A spaceship travels at approximately 0. 25c with respect to earth. this means 24 hours at the spaceship will be x hours to us on
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!