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
Lady_Fox [76]
3 years ago
13

What is the acceleration of the box?

Physics
1 answer:
worty [1.4K]3 years ago
8 0

Answer:

a=4,32m/s^2

Explanation:

Fnet = F1 - F2

= 12-1.2

= 10.8N

m=2.5kg

Fnet =ma

10.8=2.5a then divide both sides by 2.5 to get acceleration

You might be interested in
If you touch the two terminals of a power supply with your two fingertips on opposite hands, the potential difference will produ
LiRa [457]

Answer:

Yes the body will receive a dangerous shock in both cases.

Explanation:

Different parts of the body has different resistance. skin has the high resistance as compared to other organs of the body.

Dry skin has high resistance than wet skin this is because water is relatively good conductor of electricity, it adds parallel path to the current flow and hence reduces skin resistance.

Dry hands body has approximately 500 kΩ resistance and if 120 V electricity supply current received will be:

I = V/R= 120/ 500*10^3

I= 0.24 mA

Even the current seems is much lower than the safe zone but this is the case in case of DC voltage in case of AC voltage the body will receive a shock this is because the skin pass more current when the voltage is changing i.e. AC.

Similarly for wet hands body resistance is 1 kΩ. so the current through the body seems to be:

I = 120 / 1000

I = 12 mA

The current is higher than safe zone so the body will receive a dangerous shock.

7 0
3 years ago
A 35 kg child goes down a playground that is inclined at an angle of 27.5 degrees above the horizontal. Find the acceleration if
tigry1 [53]

Answer:

4.16m/s²

Explanation:

According to Newtons second law;

\sum Fx = ma_x\\Fm - Ff = ma_x\\W sin\theta - \mu R cos \theta = ma_x\\mg sin\theta - \mu mg cos\theta = ma_x\\

Fm is the moving force

\mu is  the coefficient of kinetic friction between the child and the slide

m is the mass

g is the acceleration due to gravity

a is the acceleration of the child

Substitute the given values and get the acceleration as shown;

35(9.8)sin27.5 - 0.415(35)(cos27.5) = 35a

158.38-12.88 = 35a

145.49 = 35a

a = 145.49/35

a = 4.16m/s²

Hence the acceleration of the body is  4.16m/s²

4 0
2 years ago
A 58 kg boy and a 38 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleratio
Arada [10]
H rerrr hrdzjrtfhhtthfjytr
6 0
3 years ago
The movement of water is like the flow of the electricity. Electricity must have a complete path for the flow. This movement is
Mama L [17]
The answer is current.

Current in the context of an electrical circuit is the flow of charge. Current is a quantity that is physical and can be measured. Current is defined as the rate of the flow charge past a certain point in a circuit. Current is expressed in Amperes which is equal to 1 coulomb/1second. 
7 0
3 years ago
3. Once water makes it's way through the entire water cycle,
MaRussiya [10]

Answer:

evaporation

Explanation:

without 4he evaporation it can even start the cycsl

7 0
3 years ago
Read 2 more answers
Other questions:
  • the temperature of a 2.0-kg increases by 5*c when 2,000 J of thermal energy are added to the block. What is the specific heat of
    7·1 answer
  • Two trucks have the same velocity but different masses. Truck 1 has a mass of 200kg and truck 2 has a mass of 500kg . Which truc
    6·1 answer
  • The distance traveled, in feet, of a ball dropped from a tall building is modeled by the equation d(t) = 16t2 where d equals the
    14·1 answer
  • The idealized body that emits the maximum amount of radiation at a given temperature and absorbs all the radiation incident on i
    7·1 answer
  • A 180-ohm resistor has 0.10 A of current in it. what is the potential difference across the resistor
    5·1 answer
  • Stated the types of material a scrap heap magnet can and cannot move. HELP ME PLEASEEEE!!!! I NEED THE ANSWER IMMEDIATELY!!!!!
    8·1 answer
  • Which feature of the sun releases large amounts of magnetic activity that can cause the communication systems of the Earth to ma
    8·2 answers
  • A car is pulled with a force of 10,000 N. The car's mass is 1267 kg. But, the car covers 394.6 m in 15 seconds
    13·1 answer
  • Sports managers have the potential to earn more than a million dollars per year.<br> True<br> false
    9·1 answer
  • Can anyone help me on the summer and winter Gizmo questions. Activities A and B?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!