a car with a mass of 1200 kilograms is moving around a circular curve at a uniform velocity of 20 m/s the centripetal force on the car is 6000 neutrons what is the radius of the Curve
Answers
Let's clean those up first, and then we'll work on the answer.
-- The car is NOT moving with uniform velocity.
'Velocity' includes both speed and direction. If either of these
changes, it's a change of velocity.
On a circular track, the car's direction is CONSTANTLY changing,
so its velocity is too.
The thing that's uniform is its speed, not its velocity.
-- A 'neutron' is a subatomic particle found in the nucleus of most
atoms. It's not a unit of force. The unit of force is the 'Newton'.
_______________________
OK. A centripetal force of 6,000 newtons keeps 1,200 kg of mass
moving in a circle at 20 m/s.
The formula:
Centripetal force = (mass) (speed)² / (radius)
Multiply each side
by 'radius': (centripetal force) x (radius) = (mass) x (speed)²
Divide each side by
'centripetal force': Radius = (mass) x (speed)² / (centripetal force)
Write in the numbers
that we know: Radius = (1200 kg) (20 m/s)² / (6000 Newtons)
= (1200 kg) (400 m²/s²) / (6000 Newtons)
= (480,000 kg-m²/s²) / (6000 kg-m/s²)
= (480,000 / 6000) meters
= 80 meters .
Answer:
80 meters
Explanation:
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B) c + 100 km/h
C) c – 100 km/h
D) depends on the temperature, but faster than the speed if the truck was not moving.
E) faster than if the truck was not moving, but impossible to calculate with the given information
Answers
Answer:
A) c
Explanation:
Speed of light is always constant irrespective of the wave source's motion and the observer's inertial frame of reference. So, no matter how fast the car is moving the speed of light will always be constant. The speed of light in air is around 299704644.54 m/s. The meter is also defined by the speed of light as 1 meter is the distance travelled by light in 1/299792458 second.
Answers
The only thing you need to do is to find t and the problem is solved.
Answer:
Time taken, t = 2.37 seconds
Explanation:
It is given that,
Height of an object at time t is given by :
Where
v₀ is initial velocity of object
h₀ is initial height of the object
The feather is dropped from the top of the bridge 90 feet above a river. we have to find the time taken by the feather to reach the water.
At the surface of water, h(t) = 0 and v₀t = 0
So,
t = 2.37 seconds
The feather will take 2.37 seconds to reach the water surface.
Answers
47,000 written as 4.7 x 104 in s scientific notation
Answers
Answer: Microwaves
Explanation:
RADAR stands for radio detection and ranging. Radio waves range from 300 GHz to 30 Hz. Modern radar uses higher frequency of waves for detection. These waves are microwaves (300 MHz-300 GHz). Microwaves are types of radio waves and are used in the radar detection.
The electromagnetic wave which has highest frequency is gamma wave but it is not used for radar detection.
Hence, the correct answer is microwaves are the type pf radio waves which have the highest frequency and are used in radar detection.
B) x-rays
C) micro waves
D) radio waves
Answers
The range of X-rays goes from 1x10^-8 to 1x10^-11.
Answers
Answer:
It is, however, an important primary step in the water treatment process, because coagulation removes many of the particles, such as dissolved organic carbon, that make water difficult to disinfect. Because coagulation removes some of the dissolved substances, less chlorine must be added to disinfect the water.
Explanation: