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likoan [24]
3 years ago
8

Pls help me this is being timed.

Physics
1 answer:
GrogVix [38]3 years ago
5 0

Answer:

Increase air resistance

Explanation:

Gravity forces the parachute down but air resistance pushing up on the flat surface of the parachute causes it to fall slower to the ground.

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Give your answer with solution(Easy Question)
Furkat [3]

Volume of any rectangular prism is (length) x (width) x (height).

The box in the picture is definitely a rectangular prism, so its volume is

(length) x (width) x (height) .

That's (4.0 cm) x (6.0 cm) x (2.0 cm) = 48 cm³ .

So the volume of the box is 48 cm³ fer sher, but that's NOT the preferred answer to this question.  If you take your time and read all the fine print carefully, you'll see that this sneaky question wants the answer in units of meter³ .  In order to produce the answer that it's fishing for, YOU have to be sneaky too.  You have to convert units, either before you start doing the calculating, or else convert the units of your result before you choose the answer from the list.

Before you calculate: Convert the given dimensions to (meters).  Then

Volume = (0.04 m) x (0.06 m) x (0.02 m)

Volume = 0.000048 m³

<em>Volume = 4.8 x 10⁻⁵ m³</em>


After calculating but before picking the answer:

Volume = (4.0 cm) x (6.0 cm) x (2.0 cm)

Volume = (48 cm³)

Convert:

Volume = (48 cm³) x (1 meter / 100 cm)³

Volume = (48 cm³) x (1 meter³ / 10⁶ cm³)

Volume = (48 cm³ meter³ / 10⁶ cm³)

Volume = 48 x 10⁻⁶ m³

or

<em>Volume = 4.8 x 10⁻⁵ m³</em>

This is exactly the same number as 48 cm³, but this is the way they want to see it, and 48 cm³ isn't.  So you have to select choice - <em>D .</em>


5 0
3 years ago
Two objects are moving at equal speed along a level, frictionless surface. the second object has twice the mass of the first obj
Zarrin [17]

first object gors highest

second object goes lowest.


5 0
3 years ago
Playing a certain musical note on a trumpet
Virty [35]

Answer:

(1) Resonance

Explanation:

Resonance is the process whereby a system is set into vibration due to the vibration of a nearby system with larger amplitude. The frequency at which this vibration takes place is called the resonant frequency.

It is a phenomenon of amplification that occurs when the frequency of a periodically applied force is in harmonic proportion to the natural frequency of the system on which it acts.

7 0
3 years ago
Describe what happens to atom size as you go from left to right on the periodic table.
Brilliant_brown [7]
The mass number increases
7 0
3 years ago
A wheel is being turned to open a valve on a compressor. The resistance that is applied to the axle of the valve is 235 lb. The
SIZIF [17.4K]

Answer:

3.8 in

Explanation:

A wheel and axle machine is a machine in which the wheel rotates around the rod (axle). They rotate together thereby transferring force among each other.

The formula for a wheel and axle is:

Fr * Rr = Fe * Re

Where Fr is the resistance force, Rr is the radius of the resistance force, Fe is the effort force and Re is the radius of the resistance force.

Given that: Fr = 235 lb, Fe = 45 lb, Re = 20 in / 2 = 10 in. Hence:

235 * Rr = 45 * 10

Rr = 45 * 10 / 235

Rr= 1.9 in

Diameter of axle = 2 * 1.9 = 3.8 in

3 0
3 years ago
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