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
n200080 [17]
3 years ago
8

For each value below, enter the number correct to four decimal places. Suppose an arrow is shot upward on the moon with a veloci

ty of 52 m/s, then its height in meters after t t seconds is given by h ( t ) = 52 t − 0.83 t 2 h(t)=52t-0.83t2. Find the average velocity over the given time intervals.
Physics
1 answer:
kenny6666 [7]3 years ago
4 0

The time intervals are missing in the question.You can put any time in equation v(t) which I have solved

Answer:

v(t)=52-1.66t

Explanation:

Given data

Velocity=52 m/s

Height h(t)=52t-0.83t²

To find

Average velocity

Solution

As we know that velocity is first derivative of distance with respect to time

So

v(t)=\frac{dh(t)}{dt}\\ v(t)=\frac{d}{dt}[52t-0.83t^{2} ]\\ v(t)=52-1.66t

After one second the velocity is

v(t)=52-1.66t\\at\\t=1seconds\\v(1)=52-1.66(1)\\v(1)=56.33m/s

You might be interested in
2. Which of the following wavelength properties would require a stopwatch to measure?
katovenus [111]

Answer:

<u><em>A. wavelength</em></u>

Explanation:

The others are about sound and how high it is. That has nothing to do with time.

3 0
3 years ago
Read 2 more answers
If the starting population of 5 rabbits grows at 200% each year, how many will there be 50 years?
just olya [345]

Answer:

Alot of god dam rabbits

Explanation:

7 0
3 years ago
Read 2 more answers
Fe has the electron configuration [Ar]3d64s2. What is the magnitude of the orbital angular momentum for its most energetic elect
salantis [7]

Answer : The magnitude of the orbital angular momentum for its most energetic electron is, \sqrt{6}\hbar

Explanation :

The formula used for orbital angular momentum is:

L=\sqrt{l(l+1)}\hbar

where,

L = orbital angular momentum

l = Azimuthal quantum number

As we are given the electronic configuration of Fe is, [Ar]3d^64s^2

Its most energetic electron will be for 3d electrons.

The value of azimuthal quantum number(l) of d orbital is, 2

That means, l = 2

Now put all the given values in the above formula, we get:

L=\sqrt{2(2+1)}\hbar

L=\sqrt{6}\hbar

Therefore, the magnitude of the orbital angular momentum for its most energetic electron is, \sqrt{6}\hbar

7 0
3 years ago
LOTS OF POINTSA rocket of mass 40 000 kg takes off and flies to a height of 2.5 km as its engines produce 500 000 N of thrust.
Svetradugi [14.3K]

Answer:

i) E = 269 [MJ]    ii)v = 116 [m/s]

Explanation:

This is a problem that encompasses the work and principle of energy conservation.

In this way, we establish the equation for the principle of conservation and energy.

i)

E_{k1}+W_{1-2}=E_{k2}\\where:\\E_{k1}= kinetic energy at moment 1\\W_{1-2}= work between moments 1 and 2.\\E_{k2}= kinetic energy at moment 2.

W_{1-2}= (F*d) - (m*g*h)\\W_{1-2}=(500000*2.5*10^3)-(40000*9.81*2.5*10^3)\\W_{1-2}= 269*10^6[J] or 269 [MJ]

At that point the speed 1 is equal to zero, since the maximum height achieved was 2.5 [km]. So this calculated work corresponds to the energy of the rocket.

Er = 269*10^6[J]

ii ) With the energy calculated at the previous point, we can calculate the speed developed.

E_{k2}=0.5*m*v^2\\269*10^6=0.5*40000*v^2\\v=\sqrt{\frac{269*10^6}{0.5*40000} }\\ v=116[m/s]

8 0
3 years ago
Can someone slove these problems please with work step by step :(
Rudik [331]

Answer:

i like how your computer thing is red, mine is orange bc i have a haikyuu wallpaper

Explanation:

6 0
3 years ago
Other questions:
  • A crew member is walking on a tugboat that is pulling a barge. The tugboat is moving at a constant speed upstream in a river tha
    13·1 answer
  • according to newtons second law of motion, when an object is acted on by an unbalanced force, how will that object respond?
    13·2 answers
  • A steam turbine operates with 1.6 MPa and 350°C steam at its inlet and saturated vapor at 30°C at its exit. The mass flow rate o
    13·1 answer
  • What is a catchy slogan to help people remember the difference between weathering and erosin
    14·1 answer
  • By how many newtons does the weight of a 85.9-kg person lose when he goes from sea level to an altitude of 6.33 km if we neglect
    14·1 answer
  • Which statement is true about the part of the electromagnetic spectrum that human eyes can detect?
    11·2 answers
  • How are electrons involved in the formation of a bond between atoms?
    7·1 answer
  • Help me please
    9·1 answer
  • a piping system consists of 100 ft of 2-inch pipe, a sudden expansion to 3-inch pipe, and then 50 ft of 3-inch pipe. Water is fl
    9·1 answer
  • First use of electricity<br> Greece<br> Itally<br> Allentwon<br> California
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!