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GalinKa [24]
3 years ago
8

The air in a balloon is a type of _____. a. matter b. energy c. volume

Physics
1 answer:
devlian [24]3 years ago
8 0

the answer is A.

because it says THE AIR which means there is air in the balloon

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Is everyone in your class able to hear a quiet sound equally well?
Sergio039 [100]

Answer:

No

Explanation:

Loudness describes how people perceive sound (see loudness). ... If people could hear equally well at all frequencies, the contour lines would be flat because the same measured sound intensity would be perceived to be equally loud regardless of the sound frequency. In fact, people do not hear as well at low frequencies.

8 0
3 years ago
To practice Problem-Solving Strategy 11.1 Equilibrium of a Rigid Body. A horizontal uniform bar of mass 2.7 kg and length 3.0 m
Zanzabum

Answer:

T_{1} = 14.88 N

Explanation:

Let's begin by listing out the given variables:

M = 2.7 kg, L = 3 m, m = 1.35 kg, d = 0.6 m,

g = 9.8 m/s²

At equilibrium, the sum of all external torque acting on an object equals zero

τ(net) = 0

Taking moment about T_{1} we have:

(M + m) g * 0.5L - T_{2}(L - d) = 0

⇒ T_{2} = [(M + m) g * 0.5L] ÷ (L - d)

T_{2} = [(2.7 + 1.35) * 9.8 * 0.5(3)] ÷ (3 - 0.6)

T_{2}= 59.535 ÷ 2.4

T_{2} = 24.80625 N ≈ 24.81 N

Weight of bar(W) = M * g = 2.7 * 9.8 = 26.46 N

Weight of monkey(w) = m * g = 1.35 * 9.8 = 13.23 N

Using sum of equilibrium in the vertical direction, we have:

T_{1} + T_{2} = W + w   ------- Eqn 1

Substituting T2, W & w into the Eqn 1

T_{1} + 24.81 = 26.46 + 13.23

T_{1} = <u>14.88</u> N

8 0
3 years ago
A police officer measures a straight skid mark on the road of length d=20m. the car involved is stationary at the end of the ski
zvonat [6]
80 divided by 20 is 2
8 0
3 years ago
Object A and object B are moving with the same momentum. Which of the following statements must be true?
nordsb [41]

The FIRST statement on the list is the definition of momentum, so that's the one that must be true.

5 0
3 years ago
An airplane travels at 950 km/h. how long does it take to travel 1.00 km
Reptile [31]
First calculate the <em>percentage of one hr</em> it takes. You can do this by dividing the distance by the velocity. The general formula for this is:

D = v *t

always remember to make sure your units are the same.

so that's 1km by the 950km/h velocity.

1/950 = 0.0010526 hrs

Then multiply that answer by 3600 (<em>the number of seconds in 1 hr</em>) to find how many seconds this is.

0.0010526 * 3600 = 3.789 seconds
4 0
3 years ago
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