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sdas [7]
3 years ago
6

Match each word to its definition. (Picture should be included)

Physics
1 answer:
Leto [7]3 years ago
4 0

Answer:

flow of electric charges - current

opposition to the flow of an electric current - resistence

stored potential energy at the source of a circuit - voltag

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You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 790 N and that of your belonging
aliina [53]

Answer:

a) W=26600J

b) W=-12008J

Explanation:

Given the information from the exercise we can calculate the work done by the elevator using the following formula:

W=F*s

a) Considering you and your belongings as a system we know that the elevator is applying a Normal reaction force of:

F=790N+960N=1750N

Since the force applied and the displacement is in the same direction, the work done by the elevator is positive

W=(1750N)(15.2m)=26600J

b) The reaction force applied by the elevator is the same as the weight of the person

F=790N

Since the force applied and the displacement is in opposite direction, the work done by the elevator is negative

W=-(790N)(15.2m)=-12008J

7 0
3 years ago
What is the maximum distance that a 60.-watt motor may vertically lift a 90.-newton?weight in 7.5 seconds?a. 2.3mb. 5.0mc. 140md
Naddik [55]

Answer:

b. 5.0 m

Explanation:

Power: Power can be defined as the rate at which work is done.

The S.I unit of power is watt (W).

P = W/t ............................................... Equation 1

Where p = power, W = work, t = time.

But

W = F×d..................................... Equation 2

Where F = force, d = maximum distance.

Substituting equation 2 into equation 1

P = F×d/t

making d the subject of the equation above,

d = Pt/F......................................................... Equation 3

<em>Given: F = 90 Newton, P = 60 watt, t = 7.5 seconds.</em>

<em>Substituting these values into equation 3,</em>

<em>d = 60×7.5/90</em>

<em>d = 5 m</em>

Thus the maximum distance is = 5 m

The right option is b. 5.0 m

5 0
3 years ago
What does fitness means to you
Tasya [4]

Answer:

Exercising, yoga

Explanation:

8 0
3 years ago
Read 2 more answers
What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?
I am Lyosha [343]

Answer:

Cape Point lighthouse

Explanation:

The lighthouse is located South of Cape Town, at a point where boats turn to go around the tip of Africa.

The new lighthouse has the most powerful light of all the lighthouses in South Africa, with a power of 10 megacandelas.  That's why it's being visible for up to 63 km around.

It's a very important lighthouse helping to conduct the traffic around dangerous waters where 2 oceans meet.

7 0
3 years ago
Jane starts from her house to take a stroll in her neighborhood. After walking for 2 hours at a steady pace, she has walked 4 mi
9966 [12]

Answer:

C. 2 mph

Explanation:

speed equals total distance covered in total time of of travel

since,

total distance = 4 miles

time taken = 2 hrs

speed = 4m / 2hrs =2mph

3 0
3 years ago
Read 2 more answers
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