Why do objects accelerate when dropped on Earth?

A vehicle traveling on wet or slick roads can begin to _________ as water forms a barrier between the road and the tires and tra

joja [24]

Answer: B.) HYDROPLANE

Explanation: The term hydroplane can be used to refer to a condition which usually occur during a downpour or on surfaces covered by water. It occurs when water forms a barrier or comes in between the frictional grip which occurs between the road surface and the car tyres. The contact between the car tyres and the road surface is supposed to give adequate frictional support which prevents the car from skidding or skidding uncontrollably on the road surface. However, when water comes invetween the surface, traction is lost and skidding results due to very low Coefficient of friction between the road and Tyre which was supposed to provide a firm grip between the tyres and the road surface.

7 0

4 years ago

A series RC circuit contains a 1,000 ohm resistor and a 0.025 microfarad capacitor. What is the time constant of this circuit?

stiks02 [169]

The RC time constant, also called tau, the time constant (in seconds) of an RC circuit, is equal to the product of the circuit resistance (in ohms) and the circuit capacitance (in farads), i.e.

$\tau = RC$

Here,

R = Resistance

C = Capacitance

Replacing we have that

$\tau = (1000)(0.025*10^{6})$

$\tau = 25*10^{-6}$

$\tau = 25\mu s$

Therefore the time constant of this circuit is $\tau = 25\mu s$

5 0

3 years ago

Which statement best describes the relationship between mass and gravitational attraction (pull)?

Gnesinka [82]

Answer:

The first option, "The more mass an object has, the greater the gravitational pull. "

Explanation:

Newton's Law of Gravity states that $F_G=\frac{Gm_1m_2}{r^{2}}$ , where G is the gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and <em>r</em> is the distance between the objects' centers. Because the objects' masses are in the fraction's numerator, they are directly proportional to $F_G$ , and increasing the mass of one or both objects increases the gravitational pull.