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goldenfox [79]
3 years ago
11

a 100 N block on a 30 incline, is being held motionless by friction. The coefficient of static friction between the block and th

e plane is 0.60. The force due to friction is?
Physics
1 answer:
nirvana33 [79]3 years ago
7 0
The answer would be 50N
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what would happen to the simple circuit if an additional wire were added to the circuit to connect the terminals of the bulb to
lilavasa [31]

As current increases, the wires heat which can cause a fuse to blow or a circuit breaker to trip. As additional branches are added to a parallel circuit, the overall resistance of the circuit decreases. A decrease in resistance creates an increase in current.

<h3>What is a Simple circuit ?</h3>

A battery (or other energy source), a light bulb (or other energy-consuming device), and conducting wires that connect the two terminals of the battery to the two ends of the light bulb make up a simple electric circuit.

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6 0
2 years ago
If the SAME person does a cannonball from these different heights, which height will produce the biggest SPLASH? WHY?
sveta [45]

Answer:

the impact on the water varies from different heights, therefore the mass stays the same, yet the force on the water increases from a higher height. A taller height will produce a bigger splash!

Explanation:

3 0
3 years ago
Is it possible for an inverted pyramid to exist, like the one show here? Explain your answer.
Korvikt [17]

Answer:

Not possible, if we talk about real pyramids

Explanation:

There is no image shown in the question statement. However if we talk about the pyramids as we find them in Egypt, we cannot get a stable inverted pyramid because of the difficulty in terms of balancing it from its centre of mass. In theory one might balance the forces, but in actual, to balance all the load of the structure just on a point is extremely difficult.

However, the term inverted pyramid can be found in ecological system and also used as metaphors in English literature

5 0
3 years ago
What is the period of a sound wave with a frequency of 20Hz?
swat32
Answer is 0.05

Explanation

5 0
3 years ago
Spud Webb, height 5'7", was one of the shortest basketball players to play in the NBA. But he had an impressive vertical leap; h
nlexa [21]

Answer:

a)   v = 4.64 m / s , b)    t = 0.947 s , c)    t = 0.947 s

Explanation:

We will work on this exercise with vertical launch kinematics, let's start by calculating the height of the jumper in the SI system

         y₀ = 5 ’(0.3048 m / 1’) + 7 ”(2.54 10-2 m / 1”) = 1.70 m

The distance they give is the height of the jump

          y = 1.10 m

Let's use energy conservation

Starting point.  On the floor

          Em₀ = K = ½ m v²

Final point. Maximum height

           Em_{f} = U = m g y

           Em₀ = Em_{f}

           ½ m v² = m g y

           v = √2gy

         

Let's calculate

          v = √(2 9.8 1.10)

          v = 4.64 m / s

b) Air time is the time to go up plus the time to go down, which is the same

For maximum height the speed is zero

          v = v₀ - g t₁

          t₁ = v₀ / g

          t₁ = 4.64 /9.8

          t₁ = 0.4735 s

The total time is

           t = 2 t₁

           t = 2 0.4735

           t = 0.947 s

c) if it takes a distance of 0.40 to reach speed, what is the acceleration, as it stands on the floor its initial speed is zero

          v² = v₀² + 2 a x

         a = v² / 2x

         a = 4.64²/2 0.40

         a = 26.9 m / s²

7 0
4 years ago
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