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lianna [129]
4 years ago
13

Samantha wants to study circus performance when she gets to college. She has mastered many physical skills already, but she keep

s falling short on her jumps. Which skill should she work on to get better at jumping to catch the trapeze? A) Agility B) Reaction C) Balance D) Power
Physics
2 answers:
olga55 [171]4 years ago
3 0

Answer: D. Power

Explanation:

The question clearly states that she has mastered many physical skills, except jumping to catch the trapeze. What she will need in order to be able to perfect her jumps is Power.

Power is very important here because her jumps will require strength. If she can therefore work on strengthening her jumps, she will catch the trapeze.

Elena-2011 [213]4 years ago
3 0

Answer: D. Power

Explanation:

Power is the ability to project strength within the shortest possible time frame. Jumping is an exercise which requires the exertion of power.

For Samantha to get better at jumping to catch the trapeze she needs to develop power thorough exercises like the Split which increases the trainers flexibility and muscle strength.

Agility involves a person's ability to redirect his body position as fast as possible.

Balance is the athlete's ability to remain in position even after exerting a force.

Reaction time measures how fast a person reacts when stimulated.

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Which occurs when a wave is reflected?
dmitriy555 [2]

Answer: The wave can flip upside down.

Reflection is the bending of a wave when it cannot pass through. For example, plain mirrors which are flat, a ray of light hits the mirror and is reflected from the mirror since it cannot pass through  

When reflection occurs the speed and frequency of the wave does not change but the wave is flipped upside down.

The speed does not change because speed is affected by the change in medium the frequency also remains the same since the energy of the wave does not change.


3 0
3 years ago
Read 2 more answers
a ball on a string makes 30.0 revolutions in 14.4s, in a circle of radius 0.340m. what is its period.(unit=s)
STALIN [3.7K]

Answer:

0.480 seconds

Explanation:

The period is the time for 1 revolution.  Writing a proportion:

14.4 s / 30.0 rev = t / 1 rev

t = 0.480 s

The period is 0.480 seconds.

7 0
3 years ago
Advantages and Disadvantages of a clinical thermometer​
lidiya [134]

Answer:

Explanation:Advatages

1..Its takes precise reading accurate

2. it is moveable because of its small weight

3.It is easy to read and can be kept inside water

Disadvantages

1. It breaks easily because of its small size

2. If broken there can be risk of exposure to mercury chemicals.

4 0
4 years ago
When a car traveling at 30m/s hits the gas pedal up to 65m/s in 3.5 sec what is the cars acceleration during that time
Blababa [14]

Answer:

d

Explanation:

4 0
3 years ago
What is the energy of each of the two photons produced in an electron-positron annihilation?
rodikova [14]

Answer:

511797.76 eV

Explanation:

Mass of electron = Mass of positron = 9.11×10⁻³¹ kg

Mass of annihilation

Δm = Mass of electron + Mass of positron

⇒Δm = 9.11×10⁻³¹+9.11×10⁻³¹

From Einstein's Equation

E=\Delta c^2\\\Rightarrow E=18.22\times 10^{-31}\times (3\times 10^8)^2\ J

1 eV = 1.602 × 10⁻¹⁹ J

\frac{18.22\times 10^{-31}\times (3\times 10^8)^2}{1.602\times 10^{-19}}=1023595.51\ eV

Energy of each photon is

\frac{1023595.51}{2}=511797.76\ eV

∴ Energy of each of the two photons produced in an electron-positron annihilation is 511797.76 eV

3 0
4 years ago
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