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The velocity of a car at time, ts^-1, during the first 20 s of its journey, is given by v = kt + 0.03t^2, where k is a constant. When t = 20 the acceleration of the car is 1.3ms^-2, what is the value of k?

Our task is to find out the value of k, which we can determine from the equations for velocity or acceleration if we know 2 of the 3 variables in either equation. We are given the value of acceleration at...

Answered by Lascelle M. • Maths tutor

7850 Views

Calculate the gravitational force acting on the Moon, caused by the Earth, given that the masses of the Earth and the Moon are 6 x10^24 and 7.3 x10^22, respectively. The distance between the Earth and the Moon is 384 400 km.

The relevant equation to use in solving this problem, from Newton's law of gravitation, is Force = ( universal constant of gravitation x mass of earth x mass of moon)/ (distance between earth and moon sq...

Answered by Adam S. • Physics tutor

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What is the difference between classical and operant conditioning?

Classical conditioning and classical conditioning are both forms of learning. Classical conditioning is the pairing of a stimulus with an involuntary response, whereas operant conditioning is the associat...

Answered by Steph V. • Psychology tutor

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Explain why Jeremy Bentham's Hedonic Calculus seeks to determine a moral cause of action

The moral framework within which the Hedonic Calculus operates is Act Utilitarianism, which establishes the greatest good for the greatest number of people as the proper goal of a moral framework, arguing...

Answered by • Philosophy tutor

6111 Views

'Loss and suffering are familiar conditions with human experience.'

In Chaucer's 'The Merchant's Tale' and Webster's 'The Duchess of Malfi' the writer's contemporary societies are reflected in the society portrayed, with both consisting of a feudal system governed by Rich...

Answered by Georgia A. • English Literature tutor

6502 Views