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madreJ [45]
3 years ago
9

What percentage of all traffic deaths occur in cars traveling less than 60 mph?

Physics
1 answer:
Alina [70]3 years ago
5 0
This is a bit too broad. Maybe this is something to google up
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A roller coaster car is loaded with passengers and has a mass of 500 kg along with a speed of 18 meters/second at the dip. The r
GenaCL600 [577]
The roller coaster is moving in a circular path, so the force that must be computed is the centripetal force. The centripetal force is the force acting on an object undergoing circular motion and is directed towards the center of the circular path. This is computed using:
F = mv²/r
F = (500 * 18²) / 12
F = 13,500 N

Now, at the bottom of the track, the track is also supporting the weight of the car and its passengers, which is:
W = mg
W = 500 * 9.81
W = 4,905 N

The total reactive force exerted by the track to counter the centripetal force and the weight of the car is:
F = 13,500 + 4,905
F = 18,405 Newtons
7 0
3 years ago
Read 2 more answers
5280 feet to meters
lesya [120]

Answer:

1m= 3.2 feets

? = 5280 feets

let ? be n

cross multiply

3.2n = 1×5280

n= 5280÷3.2

n= 1650

so, 5280 feets is equal to 1650 metres

4 0
3 years ago
GRADE 9 SCIENCE I GRADE 9 SCIENCE 1 1 OF 24
andreyandreev [35.5K]

Answer:

burger and cheese with applesauce

7 0
3 years ago
You are given three iron rods. Two of the rods are magnets but the third one is not. How could you use the three rods to definit
const2013 [10]

Answer:

A magnets always have two poles (north and south), the unmagnetized rod can be identified using properties of the poles of a magnet.

Explanation:

The law of magnetism states that like poles repel, while unlike poles attract. The simple experiment here is to use two rods at a time, keeping one of the poles of the first rod constant, while changing the poles of the other rod.

When the two rods are magnets, attraction and repulsion would be observed between the rods. But for the case of unmagnetized rod and one of the magnetised rod, only attraction is observed between the poles.

3 0
3 years ago
Fill in the word that completes each statement.
sashaice [31]

Answer:

  • Current cannot flow through a circuit when the switch is OPEN
  • Current flows through a circuit and all of the bulbs are lit only when the Switch is  CLOSE

Explanation:

In a series connected electrical circuit as also seen in all electrical Circuit the switch allows the flow of Electricity through out the circuit therefore causing the lighting of bulbs and also other electrical appliances to receive electricity.

When the switch is Open the flow of electricity in the circuit is disrupted while when the Switch is closed it allows the flow of electricity seamlessly through out the circuit. there are different types of switches but the most important is the MAIN SWITCH  because it is used to shutoff electricity completely from the entire circuit during emergencies or repairs.

5 0
3 years ago
Read 2 more answers
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