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
forsale [732]
2 years ago
13

Please help! This is due in 10 minutes

Physics
1 answer:
Elenna [48]2 years ago
8 0

Answer:

Atom - the basic particle of matter

Density - calculated from measurements of mass and volume

Motion - calculated from measurements of distance and time

Energy - can change form and move matter

Matter - the scientific word for <em>stuff</em>

<em />

Hope this helps! Please mark brainliest if correct :D

You might be interested in
Which cell part are red blood cells missing
12345 [234]
They lack a cell nucleus.
3 0
3 years ago
What type of rock forms most often near an active volcano?
BaLLatris [955]

Extrusive Igneous Rock

3 0
3 years ago
Read 2 more answers
A 52 kg and a 95 kg skydiver jump from an airplane at an altitude of 4750 m, both falling in the pike position. Assume all value
Scilla [17]

Answer: 52 kg skydiver: 9.09 m/s and 522.55 s

              95 kg skydiver: 12.3 m/s and 386.2 s

Explanation: <u>Drag</u> <u>Force</u> is an opposite force when an object is moving in a fluid.

For skydivers, when falling through the air, the forces acting on it are gravitational and drag forces. At a certain point, drag force equals gravitational force, which is constant on any part of the planet, producing a net force that is zero. Since there is no net force, there is no acceleration and, consequently, velocity is constant. When that happens, the person reached the <u>Terminal</u> <u>Velocity</u>.

Drag Force and Velocity are proportional to the squared speed. So, terminal velocity is given by:

F_{G}=F_{D}

mg=\frac{1}{2}C \rho Av_{T}^{2}

v_{T}=\sqrt{\frac{2mg}{\rho CA} }

where

m is mass in kg

g is acceleration due to gravitational force in m/s²

ρ is density of the fluid in kg/m³

C is drag coefficient

A is area of the object in the fluid in m²

Calculating:

The 52kg skydiver has terminal velocity of:

v_{T}=\sqrt{\frac{2(52)(9.8)}{(1.21)(0.7)(0.14)} }

v_{T}= 9.09

The 95kg skydiver's terminal velocity is

v_{T}=\sqrt{\frac{2(95)(9.8)}{(1.21)(0.7)(0.14)} }

v_{T}= 12.3

The 52 kg and 95kg skydivers' terminal velocity are 9.09m/s and 12.3m/s, respectively.

The time each one will reach the floor will be:

52 kg at 9.09 m/s:

t=\frac{4750}{9.09}

t = 522.5

95 kg at 12.3 m/s:

t=\frac{4750}{12.3}

t = 386.2

The 52 kg and 95kg skydivers' time to reach the floor are 522.5 s and 386.2 s, respectively.

3 0
2 years ago
A state patrol officer saw a car start from rest at a highway​ on-ramp. She radioed ahead to another officer 20 mi along the hig
Vikentia [17]

Answer:

We know from the basic speed distance relation that

Speed=\frac{Distance}{Time}

Since the car started from rest and it covered the distance between the 2 officer's in 19 minutes we have speed of the car

Speed=\frac{Distance}{Time}\\\\Speed=\frac{20}{\frac{19}{60}}=63.16mph

Which clearly exceeds the limit of 60\frac{mi}{hr}

5 0
3 years ago
How do you measure the wavelength of a transverse wave?
DENIUS [597]
By looking at how wiggily the bar is lol
8 0
3 years ago
Other questions:
  • What are the effects of noise?​
    15·1 answer
  • places with continental climates typically have _______ summers and ________ winters warm; cool hot; cool warm; cold hot; cold
    5·1 answer
  • Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a greater speed it will have a greater ine
    13·1 answer
  • An electron initially has a speed 16 km/s along the x-direction and enters an electric field of strength 27 mV/m that points in
    13·2 answers
  • Can someone help me with a)​
    6·1 answer
  • ________ fuel is a renewable alternative to petroleum fuels that is made through either biologically or chemically driven produc
    14·2 answers
  • Emotional Intelligence includes:
    9·1 answer
  • Why is an absorption spectrum especially useful for astronomers?.
    11·1 answer
  • Help!! Please!!<br><br> 15 points<br> 15 points
    13·2 answers
  • Alex drives 1900 meters in 200 s. Assuming he does not speed up or slow down, what is his speed?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!