Wanda exerts a constant tension force of 12 n on an essentially massless string to keep a tennis ball (m=60g) attached to the end of the string traveling in uniform circular motion above her head at a constant speed of 9.0 m/s. what is the length of the string between her hand and the tennis ball? you may ignore gravity in this problem (assume the motion of the tennis ball and string happen in a purely horizontal plane). a. 22 m
b. 2.5 m
c. 2.2 cm
d. 10 m

En un laboratorio, nakisha mezcla una solución de hidróxido de sodio con un indicador llamado fenolftaleína. cuando se combinan, crean una solución de color rosa. nakisha se pregunta si la mezcla de otras soluciones con fenolftaleína también creará este color rosa. ? cómo podría nakisha utilizar el proceso de investigación científica para determinar si la mezcla de otras soluciones con fenolftaleína también creará un color rosa? marque las que correspondan.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply. the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a