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kotykmax [81]
2 years ago
8

Nicki rides her bike at a constant speed for 6 km. That part of her ride takes her 1 h. She then rides her bike at a constant sp

eed for another 9 km. That part of her trip takes her 2 h. What is her average speed?
Physics
1 answer:
Rama09 [41]2 years ago
8 0

Answer:

5.25

I think that's it but km really sorry if I'm wrong so...

Explanation:

6km/1 hr= 6km per hour

9km/2 hr= 4.5 km per hour

6km/1 hr+4.5 km/1 hr= 10.5km/2 hr

5.25

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A swimming pool is 25.0 ft. long, 18.5 ft. wide, and 9.0 ft. deep. When filled, the water level is 7.0 inches from the top. Disi
GarryVolchara [31]

Answer:

1.9841256 kg

Explanation:

Given;

Length of the swimming pool = 25.0 ft = 7.62 m   ( 1 ft = 0.3048 m )

Width of the swimming pool = 18.5 ft =  5.64 m

Depth of the pool = 9.0 ft =

Total depth of the water in the pool when filled = 9 ft - 7 inches = 2.56 m

now,

Volume of the water in the pool = Length × Width × Depth

or

Volume of the water in the pool = 7.62 × 5.64 × 2.56 = 110.2292 m³

also,

1 m³ = 1000 L

thus,

110.2292 m³ = 110229.2 L

also it is given that 18 mg of Cl is added to 1 liter of water

therefore,

In 110229.2 L of water Cl added will be = 110229.2 × 18 = 1984125.6 mg

or

= 1.9841256 kg

8 0
3 years ago
Help please!
Talja [164]

The correct expression for the maximum speed of the object during its motion is \frac{FT}{m}.

<h3>Maximum speed of the object</h3>

The maximum speed of the object is determined using the following formulas;

v(max) = Aω

where;

  • A is the amplitude of the motion
  • ω is angular speed

The maximum speed of the object can also be obtained from the maximum net force on the object,

F = ma

where;

  • F is the maximum net force
  • a is the acceleration
  • m is mass of the object

F = m(v/t)

mv = Ft

v = Ft/m

Thus, the correct expression for the maximum speed of the object during its motion is \frac{FT}{m}.

Learn more about maximum speed here: brainly.com/question/4931057

3 0
2 years ago
The table represents the forces on four objects, with directions.
noname [10]

b. Objects W and Y have balanced forces, and objects X and Z have unbalanced forces.

Explanation:

An object is said to have balanced forces if the resultant of the forces acting on it is zero. This situation occurs, for instance, when the sum of the forces on the vertical direction is zero and the sum of the forces on the horizontal direction is zero as well.

For the objects in the table, we see that:

- Object W: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (30 N), so they cancel each other. Also, the resultant on the horizontal direction is zero, because we have two opposite forces with same magnitude (20 N), so they cancel each other.

- Object X: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (15 N), so they cancel each other. However, the resultant on the horizontal direction is NOT zero, because we have two opposite forces but with different magnitude (35 N and 25 N), so they do not cancel each other, and they make a net force of 35 N - 25 N=10 N.

- Object Y:  the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (60 N), so they cancel each other. Also, the resultant on the horizontal direction is zero, because we do not have forces along this direction.

- Object Z: the resultant on the vertical direction is zero, because we have two opposite forces with same magnitude (45 N), so they cancel each other. However, the resultant on the horizontal direction is NOT zero, because the net force is 22 N, not balanced from the other direction.

Therefore, objects W and Y have balanced forces, and objects X and Z have unbalanced forces.

5 0
3 years ago
Read 2 more answers
Describe how resistance affects the flow of current in a circuit
Sergeu [11.5K]

Resistance decreases the flow of current in a circuit.

Explanation:

The resistance of an electrical circuit is defined as the opposition to the flow of current in that particular circuit

4 0
3 years ago
Electoral punishment is a potential remedy to which of the following problems?
Harman [31]

Answer:

Election manipulation, vote rigging

Explanation:

Electoral fraud is sometimes known as election fraud or election manipulation or vote rigging is  illegal in the process of election.

 The electoral fraud changes from country to country .

The election process is conducted and supervised by the electoral bodies.

The manipulation of electoral processes and outcomes are also referred to as electoral malpractice.

In India a huge number of electoral malpractices are occurs.

It will happen by elections or candidates with strong criminal background are fighting the elections.  

4 0
2 years ago
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