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
OLEGan [10]
3 years ago
8

A heavy ball is hung from the ceiling by a steel wire. the instructor pulls the ball back and stands against the wall with the b

all against his chin. to avoid injury the instructor is supposed to release the ball without pushing it (fig. 6–33). why?
Physics
1 answer:
Maslowich3 years ago
8 0
If he pushes the ball it will swing back harder hitting him in the face. if he does not push it the airs force will slow it down to where he will be out of reach of the ball.
You might be interested in
A plate drops onto a smooth floor and shatters into three pieces of equal mass.Two of the pieces go off with equal speeds v at r
Firlakuza [10]

Answer:

Speed of the this part is given as

v_3 = \sqrt2 v

Also the direction of the velocity of the third part of plate is moving along 135 degree with respect to one part of the moving plate

Explanation:

As we know by the momentum conservation of the system

we will have

P_1 + P_2 + P_3 = P_i

here we know that

P_1 = P_2

the momentum of two parts are equal in magnitude but perpendicular to each other

so we will have

P_1 + P_2 = \sqrt{P^2 + P^2}

P_1 + P_2 = \sqrt2 mv

now from above equation we have

P_3 = -(P_1 + P_2)

mv_3 = -(\sqrt 2 mv)

v_3 = \sqrt2 v

Also the direction of the velocity of the third part of plate is moving along 135 degree with respect to one part of the moving plate

6 0
3 years ago
If a box is pulled with a force of 100 N at an angle of 25
love history [14]

The X and Y components of the force are 90.63 Newton and 42.26 Newton respectively.

<u>Given the following data:</u>

  • Force = 100 Newton.
  • Angle of inclination = 25°

To determine the X and Y components of the force:

<h3>The horizontal component (X) of a force:</h3>

Mathematically, the horizontal component of a force is given by this formula:

F_x = Fcos \theta\\\\F_x =100 \times cos25\\\\F_x =100 \times 0.9063

Fx = 90.63 Newton.

<h3>The vertical component (Y) of tensional force:</h3>

Mathematically, the vertical component of a force is given by this formula:

F_y = Fsin \theta\\\\F_y =100 \times sin25\\\\F_y =100 \times 0.4226

Fy = 42.26 Newton.

Read more on horizontal component here: brainly.com/question/4080400

6 0
2 years ago
Random errors can be reduced by taking repeated measurements.Error and uncertainty are interchangeable words that describe the s
fiasKO [112]

repeated mesurement can reduce the error

it is true

if you take any mesurement repeatedly and the average is taken, the error will be less

5 0
1 year ago
Light travels 3,00,000 km/s . Is it velocity or speed?​
Ludmilka [50]

Answer:

speed

Explanation:

according to your question, your answer is speed

7 0
2 years ago
What is the mechanical advantage of a 8 m ramp that rises 2 m to a stage?
Neko [114]

Answer:

Mechanical advantage = 4

Explanation:

Given the following data;

Distance of effort, de = 8m

Distance of ramp, dr = 2m

To find the mechanical advantage;

Mechanical advantage = de/dr

Substituting into the equation, we have;

Mechanical advantage = 8/2

Mechanical advantage = 4

5 0
2 years ago
Other questions:
  • The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can
    8·1 answer
  • All indicate that the universe is
    15·2 answers
  • Consider a uniformly charged sphere of radius Rand total charge Q. The electric field Eout outsidethe sphere (r≥R) is simply tha
    15·1 answer
  • SOMEONE HELP PLEASE 20 POINTS
    14·2 answers
  • Why does a comet's tail point away from the Sun? 1Choice 1 The solar wind blows the tail away from the Sun. 2 It is being pulled
    10·1 answer
  • Dimension of radius of sphere​
    7·1 answer
  • How will doctors most likely respond to someone who has an active case of drug-resistant tuberculosis?
    7·1 answer
  • If a girl does 1,350 Joules of work to pedal her bike using a force of 75 N, how far did she ride her bike?
    5·1 answer
  • If one 9V battery is used in a circuit with a total resistance of 39Ω, what is the current in the circuit?
    7·1 answer
  • What is the relationship between the current passes through the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!