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A motorcyclist is traveling east along a straight road. What is the velocity (in
meters per second) if it takes him 3 s to reach 60 meters? (Submit a number
response only!)
Answers
Answer:
20m/s
Explanation:
velocity=displacement/time
velocity=60/3
velocity=20m/s
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Answers
The work is an effect that is observed due to the application of force. Taking the concern of work-energy principle, the work is done when there is a transfer of energy take place.
What is Work Done?
When some magnitude of the force is being applied on an object to displace, then the term used to describe the effect is known as work done.
The mathematical expression for the work done is given as,
W = F × d
here,
F is the magnitude of applied force.
d is the displacement.
If we compare work with energy then, Energy, on the other hand, is the ability to do work. According to the work-energy principle, a change in the kinetic energy is equivalent to the net work done by the object. Therefore, energy is being transferred from one point to another when work is being done.
Thus, we can conclude that the work is done when a transfer of energy takes place.
Learn more about the work done here:
Answer;
Energy is being transferred
Explanation;
- Work is the force applied over a given distance, in other words work is the product of force and distance.
Work = force × distance.
- Work is measured in Joules.
- Energy on the other hand, is the ability to do work.
- According to the principle of work-energy a change in the kinetic energy is equivalent to the net work don e by the object. Therefore, when work is being done energy is being transferred from one point to another.
Answers
Answer: A) eardrum
Explanation: Audition refers to the sense of hearing. It is the process by which sound waves are perceived and interpreted by our brain. When sound waves enter the ear, they cause the eardrum to vibrate. These vibrations then travel further into the inner ear, leading to a chain of events that ultimately allows us to interpret and understand the sounds that we hear. Therefore, A is correct.
That's it!
Answers
The correct answer to the question is : 9375 N.
CALCULATION:
As per the question, the mass of the car m = 1500 Kg.
The diametre of the circular track D = 200 m.
Hence, the radius of the circular path R =
=
= 100 m.
The velocity of the truck v = 25 m/s.
When a body moves in a circular path, the body needs a centripetal force which helps the body stick to the orbit. It acts along the radius and towards the centre.
Hence, the force acting on the car is centripetal force.
The magnitude of the centripetal force is calculated as -
Force F =
=
= 9375 N. [ANS}
The centripetal force is provided to the car in two ways. It is the friction which provides the necessary centripetal force. Sometimes friction is not sufficient. At that time, the road is banked to some extent which provides the necessary centripetal force.
Final answer:
The magnitude of the net force on the car is 9375 N, directed towards the center of the track. The net force is caused by the combination of the car's weight and the normal force of the road. These forces provide the necessary centripetal force to keep the car in its circular path.
Explanation:
The magnitude of the net force on the car can be calculated using the formula F = m×a, where m is the mass of the car and a is its acceleration. Since the car is moving in a circular path, its acceleration can be determined using the formula a = v^2/r, where v is the velocity of the car and r is the radius of the circular track. The direction of the net force is towards the center of the circular track, as it provides the necessary centripetal force to keep the car moving in a circular path.
Using the given values, the magnitude of the net force on the car is F = (1500 kg) × (25 m/s)^2 / (100 m) = 9375 N. The direction of the net force is towards the center of the circular track since it provides the centripetal force required to keep the car in its circular path.
The net force on the car is caused by two external forces: the weight of the car and the normal force of the road. The weight of the car acts vertically downwards, while the normal force of the road acts perpendicular to the surface. These two forces combine to provide the net force that keeps the car moving in a circular path.
Learn more about Net force here:
#SPJ3
Answers
Answer:
Explanation:
We shall apply conservation of mechanical energy
kinetic energy of alpha particle is converted into electric potential energy.
1/2 mv² = k q₁q₂/d , d is closest distance
d = 2kq₁q₂ / mv²
= 2 x 9 x 10⁹ x 79e x 2e / 4mv²
= 1422 x2x (1.6 x 10⁻¹⁹)² x 10⁹ /4x 1.67 x 10⁻²⁷ x (1.5 x 10⁷)²
= 3640.32 x 10⁻²⁹ /2x 3.7575 x 10⁻¹³
= 484.4 x 10⁻¹⁶
=48.4 x 10⁻¹⁵ m
Answers
The work done will be "250 J".
According to the question,
- Force, F = 50 N
- Distance, d = 5 m
The work done is:
→
or,
→
By substituting the values, we get
Thus the above response is correct.
Learn more about work done here:
Work Done = 5m • 50N
Work Done = 250J
Answer: 250 Joules
b. 10 s.
c. 100 s.
d. 200 s.
e. more than 200 s.
Answers
(340,000 meters) / (340 meters/sec) = 1,000 seconds
That's more than 200 sec.