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
Anna11 [10]
3 years ago
14

A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one direction and the gun sliding

on the ice in the other direction. The bullet's mass is 0.04 kg, and its speed is 285 m/s. If the gun's mass is 2.3 kg, what is its speed (in m/s)?
Physics
1 answer:
omeli [17]3 years ago
5 0

Answer:

4.96m/s

Explanation:

Using mv = m'v'

m = 0.04kg

v = 285 m/s

m' = 2.3kg

v'= ?

0.04×285 = 2.3v'

V' = 11.4/2.3

= 4.96m/s

You might be interested in
The air around a pool and the water in the pool receive equal amounts of energy from the sun. Why does the air experience a grea
labwork [276]

Answer:

A

Explanation:

4 0
3 years ago
First to answer will be the brainliest i need the answer ASAP
Talja [164]

kinetic energy because the bird is in motion

5 0
4 years ago
Read 2 more answers
Does anyone understand This question if you do can you tell me the answer
leonid [27]

Answer:

50N increasing

Explanation:

it looks like we want the net force. this is the sum of all forces acting on the object. here the problem is extremely simplified and we are even given the values of force. this looks like the rocket is producing an upward force of 160 newtons. it also looks like maybe weight (gravity) and drag (air resistance) are producing downward force against the rocket. we can say those would be subtracting from the amount of upwards force. so 160-40-70=50N. since the force is positive that means we will still have a magnitude of force vector that points upward and so we will increase.

6 0
3 years ago
Devise an exponential decay function that fits the given​ data, then answer the accompanying questions. Be sure to identify the
7nadin3 [17]

Answer:

22145.27733 ft

124984.76055 ft

Explanation:

The equation of pressure is

P=P_0e^{-kh}

where,

P_0 =Atmospheric pressure = 800 mbar

k = Constant

h = Altitude = 35000 ft

P=\dfrac{1}{3}P_0

\dfrac{1}{3}P_0=P_0e^{-k35000}\\\Rightarrow \dfrac{1}{3}=e^{-k35000}\\\Rightarrow 3=e^{k35000}\\\Rightarrow ln3=k35000\\\Rightarrow k=\dfrac{ln3}{35000}\\\Rightarrow k=3.13\times 10^{-5}

Now

P=\dfrac{1}{2}P_0

ln2=kh\\\Rightarrow h=\dfrac{ln2}{k}\\\Rightarrow h=\dfrac{ln2}{3.13\times 10^{-5}}\\\Rightarrow h=22145.27733\ ft

The altitude will be 22145.27733 ft

P=0.02P_0

0.02P_0=P_0e^{-kh}\\\Rightarrow 0.02=e^{-3.13\times 10^{-5}h}\\\Rightarrow ln0.02=-3.13\times 10^{-5}h\\\Rightarrow h=\dfrac{ln0.02}{-3.13\times 10^{-5}}\\\Rightarrow h=124984.76055\ ft

The elevation is 124984.76055 ft

6 0
3 years ago
Party hearing. As the number of people at a party increases, you must raise your voice for a listener to hear you against the ba
dusya [7]

Answer:

\frac{r_i}{1.77} m

Explanation:

Given that

At starting separated = 1.20m

And the increase in background noise by Δβ = 5 dB, due to which the level of sound also rises

Based on the above information, the separation rf that is needed is shown below:

As we know that

I_f = I_o \times 10^{\frac{\beta}{10} }\\\\I_f = I_i \times 10^{0.5}\\\\I_f = 3.16 \times  I_i\\\\I \alpha \frac{1}{r^2} \\\\\frac{r_i^2}{r_f^2} = 3.16\\\\r_f = \frac{\sqrt{r_i^2}}{{\sqrt3.16}} \\\\= \frac{r_i}{1.77} m

Hence, the separation r_f i.e. required is  \frac{r_i}{1.77} m

We simply applied the above equation so that the correct separation could come

6 0
3 years ago
Other questions:
  • A temperature of 34 fereheight is equal to blank kelvin
    5·2 answers
  • A proton carries positive charge, and weights the same as an electron. <br> a. True<br> b. False
    8·1 answer
  • An atom has no electrical charge because _____.
    9·1 answer
  • During combustion, a fuel’s electromagnetic energy is converted into thermal energy.
    15·1 answer
  • Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long
    12·1 answer
  • How does scientific knowledge develop through making observations about the natural world ?
    11·1 answer
  • A passenger on a moving train walks at a speed of 1.40 m/s due north relative to the train. The train is traveling at 3.5 m/s du
    12·1 answer
  • Vector A has y-component Ay= +15.0 m . A makes an angle of 32.0 counterclockwise from the +y-axis. What is the x component of A?
    7·2 answers
  • On a frozen pond, a 8.54-kg sled is given a kick that imparts to it an initial speed of ð£0=1.87 m/s. The coefficient of kinetic
    7·1 answer
  • A rope attached to a sledge makes an angle of 40° with the ground. Calculate the tension in the rope required to produce a horiz
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!