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
blondinia [14]
3 years ago
9

If the horizontal component of a vector is 6 m/s and the vertical component is also 6 m/s, what is the resultant value of the ve

ctor?
A. 6 m/s
B. 8.5 m/s
C. 10.4 m/s
D. 12 m/s
Physics
1 answer:
BlackZzzverrR [31]3 years ago
6 0
Resultant force= (2*6^2)^(1/2)
=8.5m/s
answer is B.
You might be interested in
Long periods of unusually low precipitation are called?
DiKsa [7]
I think it is called a drought but i would look it up
6 0
3 years ago
Torque can cause the angular momentum vector to rotate in UCM. This motion is called ___________.
emmainna [20.7K]

Torque can cause the angular momentum vector to rotate in UCM. This motion is called _Conservation of Angular momentum__________.

Answer:

Conservation of Angular momentum

Explanation:

The motion of an object in a circular path at constant speed is known as uniform circular motion (UCM). An object in UCM is constantly changing direction, and since velocity is a vector and has direction, you could say that an object undergoing UCM has a constantly changing velocity, even if its speed remains constant.

The law of conservation of angular momentum states that when no external torque acts on an object, no change of angular momentum will occur.

Key Points

When an object is spinning in a closed system and no external torques are applied to it, it will have no change in angular momentum.

The conservation of angular momentum explains the angular acceleration of an ice skater as she brings her arms and legs close to the vertical axis of rotation.

If the net torque is zero, then angular momentum is constant or conserved.

Angular Momentum

The conserved quantity we are investigating is called angular momentum. The symbol for angular momentum is the letter L. Just as linear momentum is conserved when there is no net external forces, angular momentum is constant or conserved when the net torque is zero. We can see this by considering Newton’s 2nd law for rotational motion:

τ→=dL→dt, where  

τ is the torque. For the situation in which the net torque is zero,  

dL→dt=0.

If the change in angular momentum ΔL is zero, then the angular momentum is constant; therefore,

⇒

L  =constant

L=constant (when net τ=0).

This is an expression for the law of conservation of angular momentum.

Example and Implications

An example of conservation of angular momentum is seen in an ice skater executing a spin,  The net torque on her is very close to zero,

because (1) there is relatively little friction between her skates and the ice, and (2) the friction is exerted very close to the pivot point.

Conservation of angular momentum is one of the key conservation laws in physics, along with the conservation laws for energy and (linear) momentum. These laws are applicable even in microscopic domains where quantum mechanics governs; they exist due to inherent symmetries present in nature.

7 0
3 years ago
What is the formula for calculating wave speed?
tatiyna
Determine the frequency and the speed of these waves. The wavelength is 8.6 meters and the period is 6.2 seconds. Now find speed using the v = f. λ equation<span>.</span>
4 0
3 years ago
Read 2 more answers
A block slides down a frictionless inclined ramp. If the ramp angle is 17.0° and its length is 30.0 m, find the speed of the blo
shutvik [7]

Answer:

 v = 17.15 m/s

Explanation:

given,

angle of ramp = 17.0°

length of ramp(l) = 30 m

height of the ramp =  

     h = l sin \theta

     h = 30 sin 30^0

            h = 15 m

using energy of conservation

\dfrac{1}{2}mv^2 = mgh

\dfrac{1}{2}v^2 = gh

v = \sqrt{2gh}

v = \sqrt{2\times 9.8\times 15}

v = \sqrt{294}

 v = 17.15 m/s

 speed of block reaching at the bottom = v = 17.15 m/s

5 0
3 years ago
PLEASE I REALLY NEED HELP!
Talja [164]

Answer:

v=\dfrac{1200}{t}\ m/s

Explanation:

Given that,

The car traveled a total of 1,200 meters during this test.

We need to find the average speed of the car. The average speed of the car is given by total distance covered divided by the time taken. So,

v=\dfrac{1200}{t}\ m/s

But putting the value of t we can find the average speed of the car.

3 0
3 years ago
Other questions:
  • Which of the following are metric units? gallons kilograms pounds inches
    14·2 answers
  • Air pressure is 1.0 · 105 N/m2, air density is 1.3 kg/m3, and the density of soft drinks is 1.0 · 103 kg/m3. If one blows carefu
    8·1 answer
  • A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. Th
    5·1 answer
  • A 0.46-kg cord is stretched between two supports, 7.2 m apart. When one support is struck by a hammer, a transverse wave travels
    14·1 answer
  • a bal is launched upward with a velocity of v0 from the edge of a cliff of height D. it reaches a maximum height of H above its
    6·1 answer
  • 8a.The mass of a girl is 40 kg. Calculate her weight. (g = 9.8 m/s)
    15·2 answers
  • 1.Which car has zero acceleration?<br><br>2. which car is decelerating? ​
    14·1 answer
  • Which of the following is an example of heat transfer by convection?
    13·1 answer
  • When the moving sidewalk at the airport is broken, as it often seems to be, it takes you 41 ss to walk from your gate to baggage
    12·1 answer
  • Use ideas of electromagnetic induction to explain how the input voltage is transformed into an output voltage
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!