The gravitational potential energy of an object with a mass of 2 kilograms at a height of 5 meters is ___ joules. A. 98 B. 100 C. 120 D. 150 相关知识点: 试题来源: 解析 B。解析:重力势能公式为 Eₚ = mgh,m = 2kg,g = 9.8N/kg,h = 5m,代入可得 Eₚ = 2×9.8×5 = 98...
依据在第一小节第一句话中: Potential energy is the energy,chemical or physical,stored within an object, atom or molecule(分子),译为:势能是一种以物理或者化学的形式储存在物体原子或者分子内部的能量。72. releasing (词性转换)。依据在第一小节中 : As the log burns, the connections betweencarbon ...
Sports show countless examples every day of potential energy being transformed into kinetic energy.Kinetic energy is the energy of movement.When an archer(弓箭手)draws and holds her arrow,her bow is filled with stored potential energy.When she releases the bowstring,all the potential energy is qui...
device linked with the power arm, the invention realizes that the potential energy is increased by increasing the load of an object and then circularly converted to output power, and effectively provides energy resources required by production and life through utilizing solid potential energy conversion...
A spring with a spring constant of {eq}12\:{\rm N/m} {/eq}, has a 2-kilogram block attached to it. The spring is then compressed 20 centimeters. What is the spring potential energy? Step 1: Identify the spring constant of the spring. The spring constant is {eq}12\:{\rm N...
A. a 1 kg book on a table 1 meter high B. a 2 kg book on a table 2 meters high C. a 3 kg book on a table 3 meters high D. a 4 kg book on a table 4 meters high 相关知识点: 试题来源: 解析 D。重力势能(gravitational potential energy)的公式是 Ep 反馈...
The energy possessed by the object due to movement,referred to as the kinetic energy of the object.Objects acting situation called the potential energy.They are very different,but can be transformed into each other.Objects with kinetic energy must be movement,but objects with potential energy are...
from the study with no penalty. Parental consent and participant assent were obtained for boys under the age of 18. Boys were sent home with a letter explaining the study and a consent form. Those who returned a signed consent form were eligible to provide assent and participate in the ...
What is the mass of an object with kinetic energy of 1000 Joules and velocity of 5 meters per second? Use the formula, and show proper working.Kinetic Energy:In our everyday life, one of the most frequent energy conversions o...
What is the link for gravitational field strength, gravitational potential energy, height, and mass? An apple with a mass of 154g is placed 1.5m above the ground. What is its gravitational potential energy? What is the change in gravitational potential energy of an object with a...