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
siniylev [52]
3 years ago
8

A highway curve with radius 80 m is to be banked so that a car traveling 21 m/s will not skid sideways even in the absence of fr

iction. At what angle should the curve be banked?
Physics
1 answer:
oksano4ka [1.4K]3 years ago
7 0

Answer:

Angle, θ = 29.35

Explanation:

It is given that,

Radius of the curve, r = 80 m

Velocity of the car, v = 21 m/s

The highway curve is to be banked so that the car will not skid sideways in the presence of friction. We need to find the angle should the curve be banked. Let the angle is θ. It is given by :

tan{\theta}=\dfrac{v^2}{rg}

Where

g = acceleration due to gravity

tan\ {\theta}=\dfrac{(21\ m/s)^2}{80\ m\times 9.8\ m/s^2}

\theta=tan^{-1}(0.5625)

θ = 29.35°

Hence, this is the required solution.

You might be interested in
What happens when Earth rotates on its axis and how long does it take
faust18 [17]

Answer:

You get Day and Night

It takes 24 hour

8 0
3 years ago
Read 2 more answers
The fixed hydraulic cylinder C imparts a constant upward velocity v = 2.2 m/s to the collar B, which slips freely on rod OA. Det
Olenka [21]

Answer:

so angular velocity is 7.13128 sec−1

Explanation:

velocity v = 2.2 m/s

displacement s = 220 mm = 0.220 m

distance d = 510 mm = 0.510 m

to find out

angular velocity

solution

we know that

angular velocity will be velocity ( v)  / (displacement²  +  distance²)   .....1

now put all these value in equation 1 and we get angular velocity i.e.

angular velocity =  velocity ( v)  / (displacement²  +  distance²)

angular velocity = 2.2  / (0.22²  +  0.51²)

angular velocity = 2.2 / 0.3085

angular velocity = 7.13128

so angular velocity is 7.13128 sec−1

6 0
3 years ago
What molecular geometry would be expected for f2 and hf?
Kaylis [27]
The molecular geometry of both F2 and HF is linear.

There are only two atoms which are covalently bonded and thus, the bonding scheme with the atoms looks like this;

F --- F

H---F

So, both are linear.

4 0
2 years ago
REDDIT You look at a circular loop of wire such that the plane of the loop is perpendicular to your line of vision. The loop has
sergiy2304 [10]

Answer:

The circular loop experiences a constant force which is always directed towards the center of the loop and tends to compress it.

Explanation:

Since the magnetic field, B points in my direction and the current, I is moving in a clockwise direction, the current is always perpendicular to the magnetic field and will thus experience a constant force, F = BILsinФ where Ф is the angle between B and L.

Since the magnetic field is in my direction, it is perpendicular to the plane of the circular loop and thus perpendicular to L where L = length of circular loop. Thus Ф = 90° and F = BILsin90° = BIL

According to Fleming's left-hand rule, the fore finger representing the magnetic field, the middle finger represent in the current and the thumb representing the direction of force on the circular loop.

At each point on the circular loop, the force is always directed towards the center of the loop and thus tends to compress it.

<u>So, the circular loop experiences a constant force which is always directed towards the center of the loop and tends to compress it.</u>

3 0
3 years ago
The temp of the metal in a running car engine is 388 K. Find this temp in Celsius.
Korvikt [17]

Answer:

115°c

Explanation:

°c=k-273

388-273=115

8 0
3 years ago
Other questions:
  • Explain why ventilation is very important if there is risk of exposure to random gas in your home school
    8·1 answer
  • Why is acceleration negative in a free fall?
    10·2 answers
  • A 3 om light bulb and a 6 om light bulb are connected in series, and then hooked up to a battery. Which of the two will shine th
    6·1 answer
  • A concave lens is used to form an image. The diagram shows three incident rays that pass the object and then reach the lens. How
    13·2 answers
  • For comparison, what is the magnitude of the acceleration a test tube would experience if dropped from a height of 1.0 m and sto
    6·1 answer
  • Which refers to an object’s resistance to any change in its motion? force acceleration gravity inertia
    14·2 answers
  • Kelli weighs 425 N, and she is sitting on a playground swing that hangs 0.36 m above the ground. Her mom pulls the swing back an
    15·1 answer
  • 3) The energy resulting from motion is called
    5·1 answer
  • In the graph, the dotted line represents potential energy and the solid line represents kinetic energy.
    14·1 answer
  • (c) A moving train has a kinetic energy of 8.1 x 10(power of 6)J.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!