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
stepan [7]
3 years ago
10

A small block slides without friction along a track toward a circular loop. The block has more than enough speed to remain firml

y in contact with the track as it goes around the loop. The magnitude of the block’s acceleration at the top of the loop isa) zero b) greater than zero but less than g c) equal to g d) greater than g

Physics
1 answer:
lapo4ka [179]3 years ago
3 0

Answer:

d) greater than g

Explanation:

You have to apply Newton's Second Law to have an idea about the value of <em>the block's aceleration.</em>

∑F = ma

Where m is the mass, a is the acceleration and F represents all the forces involved.

You have to draw a free body diagram for the block at the top of the loop. (See the attachment)

Applying Newton's Second Law:

y: N+mg=ma

Where N is the <em>normal force</em> (the contact force that the loop's surface applies to the block) and mg is the <em>weight.</em>

Therefore a= \frac{N}{m} + g

So, you can notice that <em>the magnitude of the block's acceleration</em> is greater than the acceleration of gravity because of the effect of the magnitude N/m.

You might be interested in
Why do magnetic bodies lose their magnetic force?
stiks02 [169]

Answer:

Well a s the temperature increases, at a certain point called the Curie temperature, a magnet will lose its strength completely. So once the metal cools, its ability to attract magnets returns, though its permanent magnetism becomes weak. In general heat is the factor that has the most effect on permanent magnets.Explanation:

8 0
3 years ago
Simple level physics equation
goblinko [34]

deriiiiicccccckkkkkkkk mdddddds

7 0
3 years ago
Suppose I have a spherical insulating shell with inner radius r and outer radius R. The shell has a uniformly distributed charge
a_sh-v [17]

Answer:

3Q / 4 pi (R^3 - r^3)

Explanation:

Charge density = charge / volume

volume of a spherical shell = \frac{4}{3} \pi(R^{3} - r^{3})

4 0
3 years ago
Vector B has x y, and z components of 8.8,
Ostrovityanka [42]

Answer: 14.122 units

Explanation:

We have the following vector:

\vec{V}=(x,y,z)=(8.8, 7.4, 8.2)

If we want to find its magnitude we have to use the following formula:

V=\sqrt{x^{2}+y^{2}+z^{2}}

V=\sqrt{(8.8units)^{2}+(7.4units)^{2}+(8.2 units)^{2}}

V=14.122 units  This is the magnitude of vector \vec{V}

3 0
3 years ago
an air craft is travelling due north with velocity of 100m/s astrong wind blow from the west with in velocity of 25m/s the reshs
OleMash [197]

Explanation:

The aircraft is traveling north at 100 m/s.

The wind blows from the west (towards the east) at 25 m/s.

The two vectors form a right triangle.  The magnitude of the resultant velocity can be found with Pythagorean theorem:

v² = vx² + vy²

v² = (25 m/s)² + (100 m/s)²

v = 103 m/s

The direction can be found with trigonometry:

θ = atan(vy / vx)

θ = atan(100 / 25)

θ = 76.0°

The resultant velocity is 103 m/s at 76.0° north of east.

8 0
3 years ago
Other questions:
  • Which statement explains how an ionic bond and a covalent bond differ?
    8·2 answers
  • On a safari, a team of naturalists sets out toward a research station located 4.63 km away in a direction 38.7 ° north of east.
    13·2 answers
  • A 12.65 g sample of a radioactive substance is allowed to decay for 17.22 min. At that time, the sample weighed 3.115 g. What is
    14·1 answer
  • What conditions are required for a lunar eclipse?
    12·1 answer
  • What is an example of a system and describe the energy flow through it.
    9·1 answer
  • Strontium has density of 2.64 g/cm3 and crystallizes with the face-centered cubic unit cell. Calculate the radius of a strontium
    10·1 answer
  • A crane is used to swing a 450 kg wrecking ball into a 500 kg wall. The crane takes 5 s to push the ball into the building. The
    9·1 answer
  • The speed of a wave changes depending on the temperature of the medium. What do you think is the reason for this?​
    10·1 answer
  • Which of the following does not lead to addiction?
    11·1 answer
  • Can someone help me with the motion maps, I don't understand what I am supposed to write in the description or how to draw the a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!