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Vikki [24]
3 years ago
10

How do simple machines make work easier? A. They add energy to the work. B. They change the strength or direction of a force. C.

They reduce the speed of work. D. They increase the distance of applied forces.
Physics
2 answers:
WINSTONCH [101]3 years ago
6 0
Your answer is A. They add energy to the work.
Juliette [100K]3 years ago
6 0
A would be the correct answer
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Marianna [84]
The equator would be warmer than the poles. :)
4 0
3 years ago
Read 2 more answers
What velocity in km/hr would it take to accelerate a 2 kg object to the same momentum of a 1500 kg object with a velocity of 1.6
Lynna [10]

Answer:

v = 4374 Km/h

Explanation:

Given that,

Mass of the smaller object, m = 2 Kg

Mass of the bigger object, M = 1500 Kg

Velocity of the bigger object, V = 1.62 m/s

Velocity of the smaller object, v = ?

The product of its mass and velocity of a body is equal to its linear momentum. It is given by the formula

                                p = mv  Kg m/s

To find the momentum of the bigger object, substitute M and V in the above equation

                                p = 1500 Kg x 1.62 m/s

                                   = 2430 Kg m/s

The velocity imparted to the small body to attain this momentum is given by the relation

                               v = p/m  m/s

                                   = 2430 Kg m/s  /  2 Kg

                                   = 1215 m/s

By converting the velocity to Km/h

                                v = 4374 km/h

Hence, the velocity of the 2 Kg object is v = 4374 km/h

6 0
3 years ago
If the car were being moved sideways, could you determine the force on the car by using the weight equation
VashaNatasha [74]
No, if the car were moving sideways, then the forces used would be on the horizontal axis. So the weight equation would be extraneous, unless one is determining the net force through an inclined plane
7 0
3 years ago
According to​ Newton's Law of​ Cooling, if a body with temperature Upper T 1 is placed in surroundings with temperature Upper T
lesantik [10]

Answer:

27.22 F.

Explanation:

T ( t ) = T₀ + ( T₁ - T₀)e^{-kt}

T ( t ) = 41 ,  T₀ = 0 , T₁ = 140 , t = 15

Put these values in the equation above

41 = ( 140 - 0 ) e^{-15k}

41/140 = e ^{-15k}

(41/140)^{1/3} = e ^{-5k}

Let after 20 minutes temperature becomes T

T = 0 + 140 e^{-k20}

T / 41 = e^{-5k }

= (41/140)^{1/3}

T = 41 X  (41/140)^{1/3}

= 27.22 F.

7 0
4 years ago
which type of graph shows data seperated into intervals? A. stemplot B. Line Graph C. Scatterplot D. Histogram
USPshnik [31]

Answer:

D. Histogram.

Explanation:

A histogram with equal intervals is suitable here.

8 0
4 years ago
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