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Ket [755]
3 years ago
9

Marcus drove his Honda Prelude for 4 hours at a rate of 55 miles per hour. How far did he travel?

Physics
2 answers:
Leto [7]3 years ago
5 0
D.220 miles is the correct answer
rodikova [14]3 years ago
5 0
55 miles/hour means you travel 55 miles every hour. 

so 55*4 hours= 220 miles, so D is the answer
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A water balloon is thrown at 20 m/s from the top of a 20 m high building, what is its speed when it hits the ground? Does the an
Oksana_A [137]

Answer:

The final velocity is 28.14 m/s

Yes the angle of projection matters

Explanation:

Given;

initial velocity of the water balloon, u = 20 m/s

height of the building, h = 20 m

let the final speed of the ball when it hits the ground = v

The final speed is calculated as follows;

v² = u² + 2gh

v² = (20)²  +  2(9.8)(20)

v² = 400 + 392

v² = 792

v = √792

v = 28.14 m/s

Yes the angle matters, if the balloon had been dropped at a certain angle, the final velocity would have been estimated using the following formula;

v_y^2 = u_y^2 sin^2(\theta) + 2gh_y

where;

θ is the angle of projection, which accounts for the vertical component of the velocity.

6 0
2 years ago
A toaster uses 6700 joules of energy in 45 seconds to toast to a piece of bread what is power of the oven
just olya [345]
P= w/t and W= Work 
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Power is the ratio of work  per unit time. When you perform a work in a given span of time, the ratio of work performed with respect to time is Called Power. 
si unit for Power is Watt (W) 
so, P= 6,700/45
P= 148 
Final answer is P=148
8 0
2 years ago
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krok68 [10]

Answer:

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Explanation:

Evaporation and condensation are opposite processes to each other. Evaporation changes a liquid to a gas and condensation is the reverse.

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