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VMariaS [17]
3 years ago
8

True or False: The energy increase of an object acted on only by a gravitational force is equal to the product of the object's w

eight and the distance the object falls.
Physics
1 answer:
tamaranim1 [39]3 years ago
4 0

Answer:

False.

Explanation:

The statement shown in the question above is false and this can be confirmed by Newton's law on universal gravitation. According to Newton, the gravitational force exerted on any body is proportional to its weight, but the distance that the object travels when falling is disproportionate. In addition, if the force resulting from the weight of the object and its displacement has an angle of 0º, the weight force of that object will provide an increase in kinetic energy.

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Which statement is true? A. A resistor alters current and a switch turns current on and off B. A resistor measures voltage, and
alina1380 [7]

Answer:

A. A resistor alters current and a switch turns current on and off

Explanation:

Resistor is the passive component that reduces the flow of current. Switch is the electrical device that turns on or off the current by closing and opening the electrical circuit.

Thus option A. A resistor alters current and a switch turns current on and off  is correct.

3 0
3 years ago
A long, straight, vertical wire carries a current upward. due east of this wire, in what direction does the magnetic field point
Solnce55 [7]
(I assume that the 4 directions north-south-east-west are meant with respect to the wire seen from the top.)

We can use the right-hand rule to understand the direction of the magnetic field generated by the wire. The thumb follows the direction of the current in the wire (upward), while  the other fingers give the direction of the field in every point around the wire. Seen from the top, the field has an anti-clockwise direction. Therefore, if we take a point at east with respect to the wire, in this point the field has direction south.
8 0
3 years ago
What is the force of gravitational attraction between two 2.0 kg objects which are 1.5 m apart?
Schach [20]
2 pounds because 2.0X1.5 m is 2 when rounded up
5 0
3 years ago
A 2.3 kg cart is rolling across a frictionless, horizontal track toward a 1.5 kg cart that is held initially at rest. The carts
4vir4ik [10]

Answer:

Part a)

P = 7.5 kg m/s

Part b)

v = 3.26 m/s

Explanation:

As we know that two carts are moving in opposite directions

so here total momentum of two carts must be given by vector subtraction

It is given as

P = m_1\vec v_1 + m_2\vec v_2

P = (2.3)(4.5) + (1.5)(-1.9)

P = 7.5 kg m/s

Now we know that total momentum of the system is conserved here as there is no external force on this system

so the speed of the first cart when second cart was at rest is given as

P = m_1 v_1 + 0

7.5 = 2.3 v

v = 3.26 m/s

5 0
3 years ago
The centripetal force acting on a moon in a circular orbit around a planet continuously changes the _____ of the moon's motion.
boyakko [2]
Direction because if you're moving in a circle the direction is constantly changing
5 0
3 years ago
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