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2 years ago

TRUE OR FALSE. when an object changed direction without changing its speed, it is not accelerating

Physics

1 answer:

tatyana61 [14]2 years ago

3 0

Answer:

True.

Explanation:

The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. ... But the fact is that an accelerating object is an object that is changing its velocity.

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On the Moon, the acceleration due to the effect of gravity is only about 1/6 of that on Earth. An astronaut whose weight on Eart

Ulleksa [173]

A = 94.22 Newtons

b = 58.16 kg

Gravity on the moon is 1.62 m/s^2

8 0

3 years ago

A piece of tape is pulled from a spool and lowered toward a 120-mg scrap of paper. Only when the tape comes within 8.0 mm is the

Anton [14]

Answer:

$1.176\times 10^{-3} N$

Upward

Explanation:

We are given that

Mass of scarp paper, $m=120 mg=120\times 10^{-6}kg$

1mg= $10^{-6} mkg$

Distance,d =8 mm= $8\times 10^{-3} m$

Magnitude of electric force = $F_E= w=mg$

Where $g=9.8 m/s^2$

Substitute the values

$F_E=120\times 10^{-6}\times 9.8$

$F_E=1.176\times 10^{-3} N$

Gravitational force act in downward direction.

The electric force acts in opposite direction and magnitude of electric force is equal to gravitational force.

Hence, the direction of electric force is upward.

6 0

3 years ago

As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set up a measurement in which a p

Irina-Kira [14]

Answer:

The magnitude of each force is 2.45 x 10⁻¹⁶ N

Explanation:

The charge of proton, +q = 1.603 x 10⁻¹⁹ C

The charge of electron, -q = 1.603 x 10⁻¹⁹ C

Distance between the two charges, r = 971 nm = 971 x 10⁻⁹ m

Apply Coulomb's law;

$F = \frac{kq_1q_2}{r^2}$

where;

k is Coulomb's constant = 8.99 x 10⁹ Nm²/C²

q₁ and q₂ are the charges of proton and electron respectively

F is the magnitude of force between them

Substitute in the given values and solve for F

$F = \frac{(8.99*10^9)(1.603*10^{-19})^2}{(971*10^{-9})^2} \\\\F = 2.45*10^{-16} \ N$

Therefore, the magnitude of each force is 2.45 x 10⁻¹⁶ N

4 0

2 years ago

A Car is travelling at 36ft/s change to miles per hour

AVprozaik [17]

$\frac{36 ft}{1 sec} x \frac{ 1 yd}{3 ft} x \frac{1 mile}{1760 yd} x \frac{60 sec}{1 min} x \frac{60 min}{1 hour} = \frac{129,600 miles}{5,280 hours}$

So, this would simplify to about 25 miles per hour

Hope this is what you were looking for!

4 0

3 years ago

Explain the difference between density and concentration

telo118 [61]

Explanation:

A concentrated solution has a relatively greater amount of solute to solvent than other solutions of the same solute and solvent. A diluted solution has a relatively smaller amount of solute than similar solutions.

5 0

2 years ago