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
anyanavicka [17]
3 years ago
9

A 0.20 kg baseball is traveling at 40 m/s toward the batter. The ball is hit by the bat with a force of 200N, and is

Physics
1 answer:
Paraphin [41]3 years ago
8 0

Answer:

Time, t = 0.015 seconds.

Explanation:

Given the following data;

Mass, m = 0.2kg

Force, F = 200N

Initial velocity, u = 40m/s

Final velocity, v = 25m/s

To find the time;

Ft = m(v - u)

Time, t = m(v - u)/f

Substituting into the equation, we have;

Time, t = 0.2(25 - 40)/200

Time, t = 0.2(-15)/200

Time, t = 3/200

Time, t = 0.015 seconds.

Note: We ignored the negative sign because time can't be negative.

You might be interested in
A square coil ℓ = 2cm on a side with 30 turns rotates in a uniform magnetic field, B~ = B0zˆ = 0.1Tˆz, such that the normal of t
kow [346]

Answer:

a) 1.2*10^{-3}cos(1.25t)

b) 0.49mV

Explanation:

a) The coil rotates periodically with period T. Hence, we can write the variation of the magnetic flux with a sinusoidal function, and with max flux NAB. Thus, we have that:

\Phi_B(t)=NABcos(\omega t)\\\\\omega=\frac{2\pi}{T}=1.25\frac{rad}{s}\\\\A=l^2=(0.02m)^2=4*10^{-4}m^2\\\\B=0.1T\\\\\Phi_B(t)=1.2*10^{-3}cos(1.25 t) W

where we have used the values given by the information of the problem for N B and A.

b)

the emf is given by:

emf=-\frac{d\Phi_B}{dt}=-NBA\omega sin(\omega t)\\\\emf(t=12.5s)=-(30)(0.1T)(4*10^{-4})(1.25\frac{rad}{s})sin(1.25*12.5)=1.49*10^{-4}V=0.49mV

hope this helps!!

5 0
3 years ago
Mrs. Perez added a room temperature copper cube and an aluminum cube she just removed from the freezer to a beaker of boiling wa
faust18 [17]
I think the answer is A
5 0
3 years ago
When a neutrally charged atom loses an electron to another atom, the result is the creation of
asambeis [7]
ionic compound. The atom that lost the electron becomes a cation, and the atom that gains an electron becomes an anion. The cation and anion bond together because they have opposite charges to form an ionic compound. The question may be looking for just cation or anion, though.
8 0
3 years ago
Which list shows the development of atomic models in chronological order?
ratelena [41]
The correct option is PLUM PUDDING, SOLAR SYSTEM, ELECTRON CLOUD. 
J. J Thompson was the scientist who proposed the plum pudding theory of atomic model. Neil Borh was the one who developed the solar system model of atomic theory while the electron cloud model of atomic theory that is presently been used was developed by an Australian scientist called Erwin Schrodinger.<span />
5 0
3 years ago
Read 2 more answers
A person walks 13 km in 2.0 h. What is the person's average velocity in km/h and<br>m/s?​
murzikaleks [220]
13/2 = 6.5 Km/h
That’s 6500/3600= 1.8 m/s
3 0
3 years ago
Other questions:
  • A 50-kilogram student is running and has 225 joules of kinetic energy.What is the students speed in meters per second
    11·2 answers
  • A motor does 8000j of work in 20 seconds. What is the power of the motor
    12·1 answer
  • Is weight the amount of friction force applied by the earth?
    14·1 answer
  • Anybody wanna help? (Picture Included?)
    15·1 answer
  • How does natural selection lead to evolution
    7·2 answers
  • ..Psychology Help Please!
    9·1 answer
  • Season and date for this person
    11·2 answers
  • How can I find the vertical velocity
    15·1 answer
  • if the momentum of a 1,400 kg car is the same as the truck in question 17, what is the velocity of the car?
    8·1 answer
  • Ite
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!