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never [62]
3 years ago
9

You are driving on the interstate and see a sign that says the speed limit is 50 miles per hour.

Physics
2 answers:
olganol [36]3 years ago
7 0

Answer:

a

Explanation:

Kazeer [188]3 years ago
4 0

Answer:

True

Explanation:

This is because an interstate is a road that connects 2 states. For example in the US Alabama-Georgia. Now its like a highway so the appropriate Measurement would be miles. (Resulting in the answer being <em><u>True</u></em>)

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A mass M is attached to an ideal massless spring. When this system is set in motion with amplitude A, it has a period T. What is
cricket20 [7]

Answer:

<em>The period of the motion will still be equal to T.</em>

<em></em>

Explanation:

for a system with mass = M

attached to a massless spring.

If the system is set in motion with an amplitude (distance from equilibrium position) A

and has period T

The equation for the period T is given as

T = 2\pi \sqrt{\frac{M}{k} }

where k is the spring constant

If the amplitude is doubled, the distance from equilibrium position to the displacement is doubled.

Increasing the amplitude also increases the restoring force. An increase in the restoring force means the mass is now accelerated to cover more distance in the same period, so the restoring force cancels the effect of the increase in amplitude. Hence, <em>increasing the amplitude has no effect on the period of the mass and spring system.</em>

5 0
3 years ago
Fred is conducting a controlled experiment to test whether using a grow light at night will help a tomato plant grow faster. Bel
PtichkaEL [24]

Answer:

the type of tomato plants used.

Explanation:

4 0
3 years ago
The electric force between two charged balloons is 0.12 newtons. If the distance between the two balloons is halved, what will b
marshall27 [118]

Answer:

The answer is D, I just took the test

Explanation:

5 0
3 years ago
Photo below with question, please help need to confirm answer<br> Is the answer A?
GarryVolchara [31]

Answer:

Only circuit A will contain to lit bulbs

3 0
3 years ago
A person throws a ball straight up. He releases the ball at a height of 1.75 m above the ground and with a velocity of 12.0 m/s.
Lyrx [107]

Answer:

a) 1.22 s

b) 9.089 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-12}{-9.81}\\\Rightarrow t=1.22\ s

Time taken by the ball to reach the highest point is 1.22 seconds

s=ut+\frac{1}{2}at^2\\\Rightarrow s=12\times 1.22+\frac{1}{2}\times -9.81\times 1.22^2\\\Rightarrow s=7.339\ m

The maximum height the ball will reach above the ground is 1.75+7.339 = 9.089 m

8 0
3 years ago
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