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
Korvikt [17]
3 years ago
12

What’s the correct answer?

Physics
1 answer:
OverLord2011 [107]3 years ago
6 0

A & D is ya answer ...

You might be interested in
A roller coaster car starts from rest at the top of a hill 15 m high and rolls down to ground level. From there it starts into a
Softa [21]

Answer:

955.5N

Explanation:

The normal force is given by the difference between the centripetal force and gravity at the top of the loop:

F_N = F_C - F_G = m\frac{v^{2} }{r} - mg

mass m = 65kg

radius of the loop r = 4m

velocity v = ?

g = 9.8 m/s²

To find the centripetal force, you need to find the velocity of the car at the top of the loop.

Use energy conservation:

E_{tot}=mgh + \frac{1}{2} mv^{2}

At the top of the hill:

E_{tot}= mgh_{hill}

At the top of the loop:

E_{tot}=mgh_{loo}_p +\frac{1}{2} m v^{2}

Setting both energies equal and canceling the mass m gives:

gh_{hill} = gh_{loo}_p + \frac{1}{2} v^{2}

Solving for v:

v^{2} = 2g(h_{hill}-h_{loo}_p)

Using v in the first equation:

F_N = \frac{2mg(h_{hill}-h_{loo}_p)}{r} - mg

F_N = 955.5N

7 0
3 years ago
Please help me i have this due tommorrow!!!
Ronch [10]
I found this!! maybe this will help :)

8 0
2 years ago
Much of the pollution in out oceans comes from:
BabaBlast [244]

Answer:

c.) sewage and industrial waste

3 0
3 years ago
Define resistance and describe what would happen to a light bulb if the voltage increased but the resistance stayed the same. (h
PtichkaEL [24]

The light bulb would glow brighter.

<h3>What is Resistance?</h3>

a force that works against a body's direction of motion and seeks to stop or slow down motion, such as friction. a measure of how much a material prevents an electric current from flowing as a result of a voltage.

What is the law of resistance?

Resistance and Ohm's Law. According to Ohm's law, the resistance of the circuit and the current or energy travelling through the resistance are both exactly proportional to the voltage or potential difference between two places.

The current would grow since it is exactly proportionate to the voltage, increasing the light bulb's brilliance, or simply making it brighter.

to learn more about Resistance go to - brainly.com/question/15728236

#SPJ4

6 0
1 year ago
What is an example of an electromagnetic wave? Select all that apply. *
Afina-wow [57]

Answer:

A gamma ray, light from a lamp, and a microwave are examples of electromagnetic radiation.

Explanation:

Gamma radiation, visible light (light from a lamp), and microwaves are all apart of the electromagnetic spectrum.

8 0
3 years ago
Read 2 more answers
Other questions:
  • I need help witha worksheet over circuitsin physics could someone help??
    15·1 answer
  • A single-phase transformer has a turns ratio of 20,000/5,000. If a DC voltage of 50 V is applied to the primary winding, what wi
    10·1 answer
  • A centripetal force of 1,400 newtons acts on a car rounding a curve with a radius of 150 meters. If the car has a mass of 2,100
    11·1 answer
  • Calculate the power developed in a 6.0o resistor with a potential drop of 12 volts.
    6·2 answers
  • Compare the properties of electrons,neutrons and protons
    14·1 answer
  • A ball is thrown with an initial upward velocity of 5 m/s.
    11·1 answer
  • Help Please
    5·1 answer
  • Which line represents a stationary object?
    9·2 answers
  • car starts from rest and reaches a velocity of 10 m/s in 10s a) Draw the v against t graph for the motion of the car? b) From th
    15·2 answers
  • 7. Explain why observations of comets and shooting stars presented challenges to ancient astronomers using
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!