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juin [17]
3 years ago
15

Daryl ties a rope to a brick and lifts the brick straight up. the free body diagram below shows the brick when it is suspended a

bove the ground. what is force 1 in this diagram

Physics
2 answers:
Neko [114]3 years ago
8 0

Answer: weight

Explanation: Apex

Aleks04 [339]3 years ago
7 0

Answer:

C. Tension

Explanation:

The tension in the cord occurs because of the muscle power of Daryl, who lifts the brick. While doing so, Daryl needs to overcome the gravitational pull on the brick.

EXTRA:

If the brick was much heavier, than Daryl's muscles would not be able to overcome the the gravitational pull on that brick, and then the much heavier brick would remain stationary on the ground, despite the efforts made by Daryl.

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Describe in your own words what is meant by the statement that the Sun is in hydrostatic equilibrium.
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Answer and Explanation:

Hydrostatic equilibrium is the condition in which force is balance that is upward force and downward force the downward force is due to gravitational force and the upward force is due to the pressure. The Sun is said to be in hydrostatic equilibrium means the force acting on it is balance means upward force which is due to pressure is same as the force exerted by gravitation.

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4 years ago
When creating any map, what four basic elements should you include?
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Title,Scale,Date of Publication,North Arrow (Legend,Location Information,and Source of Information)
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3 years ago
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An object of unknown mass is hung on the end of an unstretched spring and is released from rest. The acceleration of gravity is
lakkis [162]

Answer:

0.33 s

Explanation:

For this case, as the object is hung on the end of an unstretched spring, we can consider this system as a simple pendulum.

For this system, we can determine the period of the motion using the following formula:

T = 2π√(L/g)

Where: T = period (in sec), L = lenght of the spring, g = acceleration of garvity = 9.8 m/s²

By the exact time the object is 2.75 cm before coming to rest, that will be the lenght of the spring we can consider (2.75 cm = 0.0275 m)

Finally:

T = 2π√(0.00275/9.8)

T = 0.33 sec

4 0
3 years ago
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 55.0 min
nevsk [136]

Part a

The average speed = total distance traveled upon total time taken.

we know, distance =speed × time

Average speed = \frac{S_1t_1+S_2t_2+S_3t_3}{t_1+t_2+t_3+t_4}

insert the values:

S_1=80 km/hr\\&#10;S_2=70 km/hr\\&#10;S_3=55km/hr\\&#10;t_1=55 min\\&#10;t_2=10min\\&#10;t_3=55min\\&#10;t_4=55min

\frac{80\times 55+70\times10+55\times 55}{55+10+55+55} km/hr

= \frac{8125}{175} km/hr

= 46.43 km/hr

Hence, the average speed for the trip is 46.43 km/hr.

Part b

the total distance between two cities via this route would be the average speed times the total time taken = 46.43 km/hr × 2.9 hr = 134.65 km

(because 175 minutes = 2.9 hours)

Hence, the total distance between two cities via this route is 134.65 km.



7 0
3 years ago
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