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
Deffense [45]
3 years ago
11

A boy throws a steel ball straight up. consider the motion of the ball only after it has left the boy's hand but before it touch

es the ground, and assume that forces exerted by the air are negligible. for these conditions, the force(s acting on the ball is (are
Physics
2 answers:
kap26 [50]3 years ago
3 0
The forces acting on the ball, aside from air friction, would be the force exerted on the ball by the boy when he threw it up, and gravity working against the motion of the ball
sweet-ann [11.9K]3 years ago
3 0
The gravity is working against the movement of the ball
You might be interested in
What are some common positive and negative attitudes toward physical activities? What
ra1l [238]

the common attributes are positive and negatively charged

4 0
2 years ago
Every gene is made of two <br> a).genotypes <br> b).alleles<br> c).cells
igomit [66]

Answer:

Every gene are made of 2 alleles

5 0
2 years ago
Read 2 more answers
Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, stra
GalinKa [24]

Answer:

how large a magnetic field would you experience = 8.16 x 10∧-4T

Explanation:

I = 20KA = 20,000A

r = 4.9 m

how large a magnetic field would you experience =  u.I/2πr

how large a magnetic field would you experience = (4π x10∧-7) × 20000/2π × 4.9

how large a magnetic field would you experience = 8.16 x 10∧-4T

4 0
3 years ago
Read 2 more answers
What is the magnitude of the kinetic frictional force
Effectus [21]

The magnitude of the kinetic friction force, ƒk, on an object is. Where μk is called the kinetic friction coefficient and |FN| is the magnitude of the normal force of the surface on the sliding object. The kinetic friction coefficient is entirely determined by the materials of the sliding surfaces. hope it helps

4 0
3 years ago
Using equations, determine the temperature, pressure and density of the air for a aircraft flying at 19.5 km. Is this aircraft s
Viefleur [7K]

Answer:

a) - 72.5°c

b) pressure = 3625.13 Pa

c) density =  0.063 kg/m^3

d) it is a subsonic aircraft

Explanation:

a) Determine Temperature

Temperature at 19.5 km ( 19500 m )

T = -131 + ( 0.003 * altitude in meters )

  =  -131 + ( 0.003 * 19500 ) = - 72.5°c

b) Determine pressure and density at 19.5 km altitude

Given :

Po (atmospheric pressure at sea level )  = 101kpa

R ( gas constant of air ) = 0.287 KJ/Kgk

T = -72.5°c ≈ 200.5 k

pressure = 3625.13 Pa

hence density = 0.063 kg/m^3

attached below is the remaining part of the solution

C) determine if the aircraft is subsonic or super sonic

Velocity ( v ) = \sqrt{CRT}  =  \sqrt{1.4*287*200.5 } = 283.8 m/s

hence it is a subsonic aircraft

4 0
3 years ago
Other questions:
  • An airplane traveling from San Francisco northeast to Chicago travels 1260 km in 3.5 h. What is the airplanes average velocity?
    13·1 answer
  • Which of the following statements are true? A solid can diffuse into a liquid, but a solid cannot diffuse into another solid. A
    7·2 answers
  • List at least five examples of minerals and their common uses.
    12·1 answer
  • Two electric motors drive two elevators of equal mass in a three-story building 10 meters tall. Each elevator has a mass of 1,00
    7·1 answer
  • Which statement correctly describes earths magnetic field? <br> 20 point question!!!!
    12·1 answer
  • A fish of 108 N is attached to the end of a dangling spring, stretching the spring by 14.0 cm. What is the mass of a fish that w
    8·1 answer
  • Supposed an object is weighted with a spring balance, first in air then while totally immersed in water.The readings on the bala
    15·1 answer
  • If vector A =i+2j-k and vec A cross vec B =3i-j+5k. find vec B​​​
    9·1 answer
  • if a car is moving down the highway at a constant velocity what does this mean about the cars acceleration?
    8·1 answer
  • How much work was required to move an object 3.0 meters if 75 joules of work were expanded
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!