Pallavi wants to find out whether the length of a ramp affects the force needed to move a wooden block up the ramp. She sets up the given experiment. What should she keep the same?
A The height of both the ramps
B The length of both the ramps
C The weight of spring balance
D Both (A) and (B)
Select a figure from the options in which Fig. (X) is exactly embedded as one of its parts.
Please how could I solve this problem
Manha remembers that her father's birthday is after 10th but before 15th of October. Her sister remembers that her father's birthday is before 20th but after 13th of October. On which day is her father's birthday?
Study the given flowchart carefully.
P, Q and R could be respectively
A Chalk powder, water and sawdust
B Salt, water and sugar
C Sugar, water and sawdust
D Sawdust, water and sugar.
It is surely wrong.Sugar and water cannot be separated by filteration.
Vishakha took few wire pieces made up of different metals and placed them in blue solution of copper sulphate. What will be the changes in the colour of the solutions present in beakers I, II and III?
On Earth, green plants are useful and needed by animals as they ____.
(i) Provide shelter
(ii) Are food producers
(iii) Produce oxygen
(iv) Produce carbon dioxide
A(i) & (iv)
B(i), (ii) & (iii)
C(ii), (iii) & (iv)
D(i), (ii), (iii) & (iv)