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
Allushta [10]
3 years ago
6

What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 meters per second?

Physics
1 answer:
mixas84 [53]3 years ago
6 0
KE = mass * velocity
^{2}
* 1/2


0.135 * 40.0
^{2}
* 1/2 = 2.7

Answer = 108 J
You might be interested in
Q4. A particle starting from rest, travels with a = 5 m/s2. What is the distance traveled in 10 sec?
anzhelika [568]

Answer:

250 m

Explanation:

Given :

Initial velocity, u = 0

Acceleration, a = 5 m/s2

Time elapsed is t = 10 seconds

The distance traveled in 10 seconds by the particle when accelerating at 5 m/s2 is given by,

$ x = ut+\frac{1}{2}at^2$

Putting the values,

$ x = 0\times 10+\frac{1}{2}(5)(10)^2$

$ x =\frac{1}{2}(5)(100)$

x = 250 m

The particle moved 250 m in 10 seconds

3 0
3 years ago
A student walks 3 miles west and then 4 miles south to get to school the student displacement was
sattari [20]
Draw an x y axis

3 miles west is 3 miles to the left, -3
4 miles south is 4 miles down, -4

connect the the point to the origin, that side is what you are looking for 
that side is also hypotenus

using Pythagorean theorem

sqrt(-4^2 + 3^2)
sqrt(25)
5 

your displacement is 5

3 0
3 years ago
Some one plz help me
Anna71 [15]

Here is your answer

Windmill- Wind energy - Mechanical energy- Electrical energy.

Flashlight- Chemical energy- Heat and light energy.

Microwave- Electrical- Thermal energy.

Firecrackers- Chemical- Heat, light and sound.

Bicycle- Muscular energy- Kinetic energy

Battery- Chemical- Electrical energy

Electrical- Thermal

Microwave

Chemical- Thermal

Burning of coal

Electrical- Mechanical

Electric motor

HOPE IT IS USEFUL

4 0
3 years ago
Conduction of a nerve impulse would be the fastest in _________
Vinil7 [7]

The options of the given are:

A. A large diameter myelinated fiber

B. A small diameter myelinated fiber

C. A large unmyelinated fiber

D. A small unmyelinated fiber

E. A small fiber with multiple Schwann cells

Answer: Option A, A large diameter myelinated fiber.

Explanation:

The conduction of the nerve impulse would be greatest in the myelinated fiber because the main function of the myelin sheath is to increase the speed of the impulse at which the electrical signals propagate.

In case of the unmyelinated sheath the nerve impulse travels slowly as the conduction waves but in case of the large diameter myelinated sheath the signals travel via saltatory conduction( hop)

In this type of propagation the signals are transferred from the node of Ranvier in one neuron to next node which increases the overall velocity of the action potentials.

8 0
3 years ago
A spaceship, at rest in some inertial frame in space, suddenly needs to accelerate. The ship forcibly expels 103 kg of fuel from
Cerrena [4.2K]

Answer:

V_s = 1.8*10^5m/s

Explanation:

There is no external force applied, therefore there is a moment's preservation throughout the trajectory.

<em>Initial momentum  = Final momentum. </em>

The total mass is equal to

m_T= m_1 +m_2

Where,

m_1 = mass of ship

m_2 = mass of fuell expeled.

As the moment is conserved we have,

0=V_fm_2+V_sm_1

Where,

V_f = Velocity of fuel

V_s =Velocity of Space Ship

Solving and re-arrange to V_swe have,

V_s = \frac{V_f m_2 }{m_1}

V_s = \frac{3/5c}{10^6}

V_s = 3.5*10^{-3}c

Where c is the speed of light.

Therefore the ship be moving with speed

V_s = \frac{3}{5}*10^{-3}*3*10^8m/s

V_s = 1.8*10^5m/s

5 0
3 years ago
Other questions:
  • A charged particle moves at 2.5 × 104 m/s at an angle of 25° to a magnetic field that has a field strength of 8.1 × 10–2 T. If t
    16·2 answers
  • What is the length of the x-component of the vector shown below?
    6·1 answer
  • which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension
    8·1 answer
  • A Martian rover is descending a hill sloped at 30° with the horizontal. It travels with a constant velocity of 2 meters/second.
    12·2 answers
  • "In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the scr
    8·1 answer
  • How far did you travel in 10 hours if you drove at a constant speed of 5km/hr? *
    7·2 answers
  • URGENT NEED HELP NOW
    14·1 answer
  • B. Solve the following problem.
    9·1 answer
  • The rotor in a certain electric motor is a flat, rectangular coil with 80 turns of wire and dimensions 2.50 cm by 4.00 cm . The
    6·1 answer
  • (PLEASE HURRY)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!