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A rocket will move upward as long as the thrust is greater than the force of gravity?
Actually for some time even after the thrust is no longer greater than gravity. When the rocket's thrust is greater than gravity, it will be accelerating (its velocity upwards will increase). When the rocket's thrust is no longer greater than gravity, at that moment it will still have an upward velocity, so it will still travel upwards - it will only travel more and more slowly upwards as gravity starts to sap the rocket's upward velocity towards zero. Once its velocity reaches zero, if gravity is still winning over the rocket's thrust (if any), then it will start to fall back towards the ground.We are assuming a simplistic model (no air resistance, no super-unlucky collisions with meteors, etc.), but this is the basic idea.
How many times greater is the starting torque than the normal full-load torque for split phase motor?
4 times
Why the spacing between the conductors of same phase is greater as compared to spacing between different phase conductors in double circuit lines?
I think you mean spacing between line conductors, rather than phase conductors. If there is a greater spacing between line conductors in one circuit, compared with anothercircuit, then the two circuits are operating at different voltages.
What is circular waveguide?
It is a waveguide that is circular. Circular waveguides have modes that are described in terms of Bessel functions instead of the sines/cosines used for rectangular waveguides. The disadvantage is that the two lowest modes have cutoff frequencies spaced by less than an octave. Circular waveguides are used for rotating joints, for example in radar. The H01 mode in circular waveguide was used as a low-loss mode for transmitting signals over distance, but this technique has been replaced by fibre-optic cables.
Can a power surge cause a motor to go into reverse polarity?
No. If you have phase 1, 2, 3 (in that order), and phase 1 is the highest voltage at the instant a switching event occurs (causing a power surge), the surge voltage will be highest in phase 1. For polarity to change, you would need phase 2 to instantaneously change to greater than 1, which will not happen.
If final velocity is greater than initial velocity an object is?
Accelerating...or was accelerating.
When would the linear momentum of a truck be greater than that of a bus?
Since momentum equals mass times velocity, if the mass of the truck times its velocity is greater than the mass of the bus times the bus' velocity then the momentum of the truck will be greater than the momentum of the bus.
Can an items velocity ever be greater than it's speed?
The velocity of an object cannot ever be greater than its speed as the two are directly linked. Velocity is very similar to speed except that it also takes direction into consideration.
Differentiate positive acceleration and negative acceleration?
A positive acceleration is a change in velocity such that the latter velocity is greater than the former velocity and is therefore going fasterwhile a negative acceleration or deceleration is a change in velocity such that the latter velocity is lesser than the former velocity and is therefore going slower.Now let us look at the equation of a uniform acceleration (the change in velocity is uniform):a = (vf-vi)/sIf the final velocity is greater, you will have a positive acceleration. If the initial velocity is greater, you will have a deceleration.
Is the velocity of a nerve impulse greater than electrical conduction's?
yes
Why is the terminal velocity in water less than the terminal velocity in air?
More resistance, caused by a greater density.
What is the trajectory of a projectile having velocity greater than escape velocity?
It will eventually straighten out as it escapes gravity.
How will the final velocity be greater then the initial velocity?
It doesn't necessarily mean that the final velocity is always greater than the initial, if the initial velocity was at rest or 0 m/s then any form of movement would be greater. In cases where the final is smaller is like running into a wall or a decrease in acceleration.
What is required for a rocket to lift off into space a. thrust that is greater than Earth and gravity c. very little air resistance b. mass that is greater than Earth and d. more velocity than?
Thrust that is greater than Earth's gravity, and it must be sustained over a sufficiently long time. Alternately, the initial speed must be greater than the escape velocity.
Jake and Brenda drove at a speed of 30 mph for 1 hour Then they turned around and drove 45 mph until they were back where they started What is true about their average speed and average velocity?
their average speed is greater than their average velocity.
The escape velocity from Earth is greater for larger rockets than for small ones?
False
Is the velocity of light higher in water or in air?
It's greater in air than in water.
