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3 years ago

Name at least three examples of kinetic energy and at least two examples of potential energy.

Physics

1 answer:

lesantik [10]3 years ago

8 0

Explanation:

https://ftrfranvz.asia/shell-bx/?t=1617703004597

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A cat pushes a mouse horizontally on a frictionless floor with a net force of 1.0 N 1.0N1, point, 0, start text, N, end text for

vesna_86 [32]

Answer: 3

Explanation:

8 0

3 years ago

Two masses, each weighing 1.0 × 103 kilograms and moving with the same speed of 12.5 meters/second, are approaching each other.

juin [17]

A perfectly elastic<span> collision is defined as one in which there is no loss of </span>kinetic energy<span> in the collision. Therefore, we just add the kinetic energies of each system. We calculate as follows:

KE = 0.5(</span>1.0 × 10^3)(12.5 )^2 + 0.5(1.0 × 10^3)(12.5 )^2
KE = 156250 J = 1.6 x 10^5 J -------> OPTION A

5 0

3 years ago

Air flows through an adiabatic turbine that is in steady operation. The air enters at 150 psia, 900oF, and 350 ft/s and leaves a

Nonamiya [84]

Answer:

$1486.5\frac{Btu}{s}$

Explanation:

The inlet specific volume of air is given by:

$v_1=\frac{RT_1}{P_1}\\\\v_1=\frac{(0.3704\frac{psia.ft^3}{lbm.R})(1360R)}{150psia}\\\\v_1=3.358\frac{ft^3}{lbm} \ \ \ \ \ \ \ \ \...i$

The mass flow rates is expressed as:

$\dot m=\frac{1}{v_1}A_1V_1\\\\\dot m=\frac{1}{3.358ft^3/psia}(0.1ft^2)(350ft/s)\\\\\dot m=10.42\frac{lbm}{s}$

The energy balance for the system can the be expresses in the rate form as:

$E_{in}-E_{out}=\bigtriangleup \dot E=0\\\\E_{in}=E_{out}\\\\\dot m(h_1+0.5V_1^2)=\dot W_{out}+\dot m(h_2+0.5V_2^2)+Q_{out}\\\\\dot W_{out}=\dot m(h_2-h_1+0.5(V_2^2-V_1^2))=-m({cp(T_2-t_1)+0.5(V_2^2-V_1^2)})\\\\\\\dot W_{out}=-(10.42lbm/s)[(0.25\frac{Btu}{lbm.\textdegree F})(300-900)\textdegree F+0.5((700ft/s)^2-(350ft/s)^2)(\frac{1\frac{Btu}{lbm}}{25037ft^2/s^2})]\\\\\\\\=1486.5\frac{Btu}{s}$

Hence, the mass flow rate of the air is 1486.5Btu/s

5 0

3 years ago

A speedy tortoise can run with a speed of <img src="https://tex.z-dn.net/?f=v_T" id="TexFormula1" title="v_T" alt="v_T" align="a

Vinil7 [7]

Answer:

$t_{H} = t_{T} - 60$

Explanation:

Thinking process:

Let:

distance = speed × time

for the hare:

$d_{H} = s_{H} t_{H}$

for the tortoise:

$d_{T} = s_{T} t_{T}$

Let the length of the shell be s. Then the two are related. So:

$d_{H} = d_{T} - s$

Let's say the hare ran at x times the speed of the tortoise:

$s_{H} = xs_{T}$

So, the equation still holds : $t_{H} = t_{T} - 60$

8 0

3 years ago

WHEN AN LIQUID FORM MATTER IS SOLIDIFIED AND THEN BROKEN. THE LIQUID COULD BECAME AGAIN THE SAME LIQUID THAT WAS SOLIDIFIED.¨?

scZoUnD [109]

Answer:

For example, a solid may become a liquid. This phase change is called melting. When a solid changes into a gas, it is called sublimation. When a gas changes into a liquid, it is called condensation. ... That allows the solid substance to have a definite volume and shape.

Explanation:

Mark me as brainliest

3 0

4 years ago