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
Alekssandra [29.7K]
2 years ago
15

A bullet is fired into the air at an angle of 30° to the horizontal. At the same time and from the same height,

Physics
1 answer:
enyata [817]2 years ago
3 0

Answer:

The bullet that is fired will spend longer  in the air, hitting the ground after the  dropped bullet.

Explanation:

Using the equation: x =  x 0  +   v t

If we neglect the effects of air resistance, the horizontal motion is a constant velocity.

The horizontal displacement = (velocity X cosθ)

So, the fired bullet has to travel horizontally before falling which takes a  longer time compared to a bullet dropped where it is, height = 1/2 gt^2

gravity, g = 9.8 m/s2.

You might be interested in
The irreversible thermite reaction (Fe2O3 + 2 Al --> 2 Fe + Al2O3) is highly exothermic, changing the temperature by over 100
likoan [24]

Answer:

the water will boil and change into a gas

Explanation:

This is because it is exothermic and releases the energy into the surroundings and the fact that water boils at 100 degrees Celsius

6 0
3 years ago
Which element has the fewest valence electrons?
xxTIMURxx [149]

Answer

the answer is c because i did that before

Explanation:

8 0
3 years ago
During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total ma
zloy xaker [14]

Answer:

See below explanation

Explanation:

The correspondent chemical reaction for copper carbonate decomposed by heat is:

CuCO₃ (s) → CuO (s) + CO₂ (g)

Considering all molar mass (MM) for each element ( we consider rounded numbers) :

MM CuCO₃ = 123 g/mol

MM CuO = 79 g/mol

MM CO₂ = 44 g/mol

Statement mentions that scientis heated 123.6 g of CuCO₃ (almost a MM), until a black residue is obtained, which weights 79.6 g : this solid residue is formed by CuO, and the remaining mass (approximatelly 44 g) belongs to teh second product, this is, CO₂; as it is a gas compund, it is not certainly included on the solid residue.

So, law of conservation mass is true for this case, since: 123.6 g = 79.6 g + 44 g. As explained, on the solid residue, we don not include the 44 g, which  "escaped" from our system, since it is a gas compound (CO₂)

5 0
3 years ago
What layer is above the troposphere
goldenfox [79]
The stratosphere is the layer above the troposphere 
6 0
3 years ago
Read 2 more answers
What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 2.1 g that has been charged to -
Liula [17]

Answer:

Electric field, E=6.86\times 10^6\ N/C

Explanation:

It is given that,

Mass of sphere, m = 2.1 g = 0.0021 kg

Charge, q=-3\ nC=-3\times 10^{-9}\ C

We need to find the magnitude of electric field that balances the weight of a plastic spheres. So,

ma=qE

a = g

E=\dfrac{mg}{q}

E=\dfrac{0.0021\ kg\times 9.8\ m/s^2}{-3\times 10^{-9}\ C}

E=6860000\ N/C

or

E=6.86\times 10^6\ N/C

Hence, the magnitude of electric field that balances its weight is 6.86\times 10^6\ N/C. Hence, this is the required solution.

4 0
3 years ago
Other questions:
  • Buildings are more dense than the surrounding air. This means that they have more _____ per volume than the air and will stay on
    5·1 answer
  • a circuit contains 2 ohm and 4 ohm resistors connected in parallel, find the total resistance & the amount of current in eac
    8·1 answer
  • In what fundamental way did the work of Galileo differ from his predecessors who had thought about the sky?
    15·1 answer
  • I NEED ANSWERS QUICK
    12·1 answer
  • An airplane is flying at a constant velocity through the air. What is the relationship between the magnitudes of the four forces
    12·1 answer
  • The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false
    11·1 answer
  • 1. Speed is a measure of
    9·1 answer
  • Convert 0.0779 kg to g
    11·1 answer
  • PLEASE HELP WITH EXPLANATION! I WILL GIVE YOU BRAINLIEST!
    11·1 answer
  • Often times we think about insulation, we think about keeping cold items cold, such as drinks in an ice chest or the cool temper
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!