• How does pressure change with elevation?

    As altitude rises, air pressure drops. In other words, if the indicated altitude is high, the air pressure is low. How do you solve pressure problems? What is the formula for pressure altitude? If you don’t have access to an altimeter, you can determine pressure altitude by using this formula: (standard pressure minus your current…

  • What is the velocity of the cannonball just before it hits the ground?

    Conclusion: The magnitude of the velocity of the ball is 26.3 m/s for the parabolic motion just before it hits the ground and this greater than the 17.1 m/s for the velocity of the ball that falls straight downward. How do you solve projectile motion problems in physics? How do you find the maximum height…

  • How far does a bungee cord stretch?

    Shock cord has a 100% elongation or can stretch to double its original length, while elastic cord has a 50% elongation or can stretch to one and a half times its original length. How do you calculate the extension of a bungee cord? Equating these expressions gives mgh = 0.5kx^2. This assumes that all of…

  • Which of Newton’s Laws explains bungee jumping?

    The bungee jump can then be divided into three phases: (i) a free-fall (with acceleration of gravity g) of the jumper, when the rope is still slack; (ii) the stretch phase until the rope reaches its maximum length; and (iii) the rebound phase consisting of a damped oscillatory motion. How does a bungee cord reduce…

  • How much can a balloon lift physics?

    Hot air balloons are based on a very basic scientific principle: warmer air rises in cooler air. Essentially, hot air is lighter than cool air, because it has less mass per unit of volume. A cubic foot of air weighs roughly 28 grams (about an ounce). If you heat that air by 100 degrees F,…

  • Do heavier objects roll down a ramp faster?

    After a two sample t-test, we find that heavier rolling objects have a statistically faster clear time for a given inclined plane in comparison to lighter rolling objects. In addition, heavier objects will be more resistant to the effects of air resistance and rolling resistance. What happens when a ball rolls down a ramp? So…

  • Why it is impossible to have an engine which is 100% efficient?

    A heat engine is considered to be 100% efficient if only all the heat is converted into useful work or mechanical energy. Since heat engines cannot convert all the heat energy into mechanical energy, their efficiency can never be 100%. How do you calculate work done by an engine? The useful work done by a…

  • Do heavier objects fall faster with air resistance?

    Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly. How do you calculate air resistance in physics? The units for the force of…

  • What happens when two objects with different mass collide?

    In accord with Newton’s second law of motion, the acceleration of an object is dependent upon both force and mass. Thus, if the colliding objects have unequal mass, they will have unequal accelerations as a result of the contact force that results during the collision. What are the cartoon laws of physics? Any body in…

  • How does a pulley affect acceleration?

    The larger the mass of the pulley the less the acceleration of the object. If you know the the mass and moment of inertia of the pulley then you can calculate the acceleration. Note that for the most common pulley shapes (e.g. disc, hoop and disc, mostly hoop), the acceleration will be independent of the…

  • What is a Type 2 projectile?

    Thus, the maximum height of the projectile formula is, H = u 2 sin 2 θ 2 g . Q. Give the formulae for the time period, maximum height reached and range of a projectile motion. How do you solve projectile motion problems in physics? How do you solve a projectile equation? If v is…

  • What is the 9.8 m s2?

    The magnitude of the acceleration due to gravity, denoted with a lower case g, is 9.8 m/s2. g = 9.8 m/s2. This means that every second an object is in free fall, gravity will cause the velocity of the object to increase 9.8 m/s. So, after one second, the object is traveling at 9.8 m/s.…

  • How do you find tension in a string?

    Measure your guitar’s scale length in inches. Multiply this length by 2 and multiply the product by the frequency you want to this string to vibrate at. Square this value and multiply it by the unit weight of your guitar string in pounds per inch. How do you solve a tension problem in physics? Step…

  • How do you calculate block and tackle?

    If there are n of these parts of the rope supporting the load FB, then a force balance on the moving block shows that the tension in each of the parts of the rope must be FB/n. This means the input force on the rope is FA=FB/n. Thus, the block and tackle reduces the input…

  • Is torque a scalar or vector?

    What is the main difference between torque and moment? Torque is the measurement of the turning force of a body, while the moment is the measurement of the perpendicular distance from the point of rotation to the force’s line of action. What is the formula for torque? Note that the torque is maximum when the…

  • How many scales are there in physics?

    There are four different scales of measurement. The data can be defined as being one of the four scales. What is a length scale in physics? In physics, length scale is a particular length or distance determined with the precision of at most a few orders of magnitude. The concept of length scale is particularly…

  • What happens when an elevator accelerates upward?

    If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator’s floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter. How do you solve an…

  • What is Aristotle’s law of motion?

    Aristotle’s Law of Motion: The natural state for an object is to be at rest. If you don’t push on an object, it will stop moving. What is Aristotle known for in physics? In his work Physics, Aristotle intended to establish general principles of change that govern all natural bodies, both living and inanimate, celestial…

  • What is IB PHY?

    Course Description The areas of physics include motion, fluids, heat, sound, light, electricity and magnetism and modern physics (relativity and atomic structures). BCC is an International Baccalaureate School; and IB Physics 2 is structured to meet the goals of the IB diploma program. What is the best IB physics textbook? Tsokos’ “Physics for the IB…

  • Why atomic number is called fingerprint?

    When atomic number changes, number of protons in the nucleus changes and so does the number of electrons. This completely changes the element as the properties of the atom will change. So, atomic number is unique for each element and therefore considered as “fingerprint” of elements. What is nuclear physics in simple terms? Nuclear physics…

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