Question
a) What was the lizard’s velocity in the first 2 seconds? b)What was the lizard’s velocity from 2-4 seconds? c) What was the lizard’s velocity from 4-5 seconds?
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General Physics 7 years 1 Answer 1069 views

Question
Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves ...
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General Physics 7 years 1 Answer 2845 views

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The figure shows a simple model of a seesaw. These consist of a plank/rod of mass mr and length 2x allowed to pivot freely about its center (or central axis), as shown in the diagram. A small sphere of mass m1 is attached to ...
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General Physics 7 years 1 Answer 7676 views

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A positive lens with focal point ”f” are used to image an object according to the figure below. For what distances ”a”(expressed in ”f”) can we get with the following characteristics; a) Up- and down, smaller and real. b) Upright, enlarged ...
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General Physics 7 years 1 Answer 1164 views

Question
An aircraft lands on a runway at a velocity of 40 m s-1 and brakes to a halt in a distance of 860 m. Calculate a) the breaking time b) the deceleration of the aircraft
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General Physics 7 years 1 Answer 1055 views

  1. When an object moving in a circle at a constant speed?

    RvTDLR
    0
    October 4, 2017 at 2:55 pm
    Centripetal acceleration = v^2 ÷ r v^2 is constant. This mea

  3. If a feather is dropped from a height, would its apparent weight be equal to its true weight or zero as in weightlessness.?

    RvTDLR
    0
    October 4, 2017 at 2:53 pm
    In a gas, where there can be a terminal velocity, the drag i

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    RvTDLR
    0
    October 4, 2017 at 2:51 pm
    Total weight = 300 + 500 = 800 N Let F1 be support force at

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    RvTDLR
    0
    October 4, 2017 at 2:46 pm
    Need the resistance and whether they are connected in series

  6. Heisenberg Uncertainty Principle?

    RvTDLR
    0
    October 4, 2017 at 2:43 pm
    The HUP is about limitations in measuring capability. The wa

  7. If you’re in a diving pool 3 meters deep, why do your ears hurt if you swim to the bottom?

    RvTDLR
    0
    October 4, 2017 at 2:42 pm
    When physicists say there is a so-and-so chance that a parti

  8. If you’re in a diving pool 3 meters deep, why do your ears hurt if you swim to the bottom?

    RvTDLR
    0
    October 4, 2017 at 2:41 pm
    The rate of change of pressure is the issue. When you climb

  9. How many calories are necessary to change 250 g of ice to water at 20 degree Celsius?

    RvTDLR
    0
    October 4, 2017 at 2:38 pm
    To solve this problem, I will assume the temperature of the

  10. 3.8 kilograms of water are changed from ice at 0˚C into liquid water at 0˚C?

    RvTDLR
    0
    October 4, 2017 at 2:37 pm
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  11. AS Physics Question – Can Someone Please Help ?

    RvTDLR
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    October 4, 2017 at 2:34 pm
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Question
PRemastered
Four children are playing in a field. The children form a line, holding hands. The player at the front of the line starts to spin around faster and faster, causing the others to run in circle, as shown in the ...
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General Physics 7 years 1 Answer 4059 views

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Learning Goal: To make the connection between intuitive understanding of a seesaw and the standard formalism for torque. This problem deals with the concept of torque, the “twist” that an off-center force applies to a body that tends to make it rotate.
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General Physics 7 years 1 Answer 3992 views

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Learning Goal: To understand and use inverse-square relationships. Two quantities have an inverse-square relationship if y is inversely proportional to the square of x. We write the mathematical relationship as y = A/x2. Here, A is a constant. This relationship is sometimes written as 
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General Physics 7 years 1 Answer 3900 views

Question
A rocket generates a net force (F) of 2,050,000 newtons, and the rocket’s mass (m) is 40,000 kilograms. Use the formula F = ma to find the acceleration (a) achieved. A. 51.25 meters/second^2 B. 51.125 meters/second^2 C. 42.25 meters/second^2
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General Physics 7 years 1 Answer 3441 views