Physics

Force $$F=at+bt^{ 2 }$$ where t is time. The dimensions of $$a$$ and $$b$$ are:


ANSWER

$${ MLT }^{ -3 } $$ and $$ { MLT }^{ -4 } $$


SOLUTION

$$F=at+bt^{2}$$

$$\downarrow$$

$$(MLT^{-2})$$

$$MLT^{-2}=at$$

$$a=MLT^{-3}$$

$$MLT^{-2}=bt^{2}$$

$$\Rightarrow b=MLT^{-4}$$

View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Single Correct Medium Published on 18th 08, 2020
Next Question
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 202
Enroll Now For FREE

Realted Questions

Q1 Single Correct Medium
Dimension of electrical resistance is : 
  • A. $$ [ML^2 T^{-3} A^{-1}] $$
  • B. $$ [ML^2 T^{-3} A^{-2}] $$
  • C. $$ [ML^3 T^{-3} A^{-2}] $$
  • D. $$ [ML^{-1} T^{3} A^{2}] $$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Single Correct Medium
In a unit time, the number of particles crossing a unit area perpendicular to y-axis is given by $$n = -A\cfrac{n_{2} - n_{1}}{y_{2} - y_{1}}$$, where $$n_{1}$$ and $$n_{2}$$ are number of particles per unit volume for position $$y =y_{1}$$ and $$y =y_{2}$$ respectively. The dimensions of A is
  • A. $$[M^{0}L^{2}T^{-1}]$$
  • B. $$[M^{1}L^{1}T^{-2}]$$
  • C. $$[M^{0}L^{1}T^{-2}]$$
  • D. $$[M^{0}L^{3}T^{-2}]$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Subjective Medium
How will you determine the volume of a cuboid write the formula you will use.

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Single Correct Medium
Count total number of S.F. in 300.00
  • A. 5
  • B. 6
  • C. 8
  • D. 9

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Single Correct Medium
Which of the following is not a derived quantity?
  • A. The floor area of a room
  • B. The height of a room
  • C. The volume of air in a room
  • D. The weight of air in a room

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer